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Fixed-DistancePast edition

Eiger Ultra Trail by UTMB

2026 results: Stian Dahl Sommerseth won the 2026 E101 in 11:44:03 and Alina Wyleżałek won the women’s race in 14:01:24, with 425 of 567 starters finishing.

Date
Jul 18-19, 2026
Location
Grindelwald, Bernese Oberland, Switzerland
Distance
101 km
Terrain
Mountain

This listed edition has ended. It remains available as an archive for course and planning research; check the official website for a newer edition before making travel plans.

Results: 2026

2026 selected results as published by the linked source
CategoryNameResult
MenStian Dahl Sommerseth (Norway)11:44:03
WomenAlina Wyleżałek (Poland)14:01:24

425 of 567 starters finished.

The E101 ran its original course in 2026; only the E250 was shortened for weather. UTMB Live’s counts cover the ranked E101 only: it lists another 77 runners, 75 of whom finished, in an unranked group for those who left the course at Burglauenen and ran straight to Grindelwald without Running Stones. UTMB Live prints the women’s winner as Alina Wylezalek, without diacritics.

Source: UTMB Live — 2026 E101 Ultra Trail ranking. Checked October 25, 2026.

Next edition: July 17, 2027. The 2027 event runs July 14 to 18, with the E101 starting at 4:00 AM on Saturday, July 17, and the E250 on Wednesday, July 14. E101 places were allocated by lottery in September and October 2026, and the race list showed E101 registration closed on October 25, 2026; the E250, E16 and Trail Surprise are first come, first served.

Event Overview

A 101 km mountain loop from Grindelwald over the Faulhorn and Männlichen to the foot of the Eiger North Face, with about 6,700 m of climbing.

Listed edition overview
DateJul 18-19, 2026
LocationGrindelwald, Bernese Oberland, Switzerland
FormatFixed-Distance
TerrainMountain
RegionEurope
Distance / duration101 km
Course modelLoop
Elevation gain6,700 m+
Elevation loss6,690 m (2026 regulations)
Cutoff25 hours (finish closes 5:00 AM Sunday), with 13 time barriers on the course
Start4:00 AM Saturday
Field sizeThe organizer does not publish an E101 field limit. UTMB Live counted 567 starters and 425 finishers (75%) in 2026, 609 starters and 447 finishers in 2024, and 619 starters and 423 finishers in 2023; in 2025, on the course cut to about 69 km, 620 of 662 starters finished. These counts leave out runners who switched at Burglauenen to the direct route to the finish, whom UTMB Live lists separately without a ranking: 77 in 2026, 75 of whom reached Grindelwald. The lottery reserves at least 30% of E101 places for Swiss nationals and guarantees two places for every nation entered. Across all distances, about 4,000 runners from more than 80 nations took part in 2026, according to Plattform J.
HighlightsFoot of the Eiger North Face, 3 UTMB Running Stones

E101 aid stations and time barriers, 2026

Checkpoints with distance, altitude, climb so far, time barrier and services, from the E101 table in the official 2026 runner guide.

E101 aid stations and time barriers, 2026
PointkmAltitudeClimb so farTime barrierServices
Grindelwald (start)01,030 m0 mStart 4:00 AM SaturdayDrinks, doctor, first aid
Grosse Scheidegg8.81,957 m1,006 m6:30 AM SaturdayDrinks, food, first aid
Bort18.21,560 m1,251 m8:00 AMDrinks, food, first aid
First (second passage)23.72,162 m1,891 m9:30 AMDrinks, food, warm soup, first aid
Feld30.22,128 m2,203 m11:00 AMDrinks, food, first aid
Faulhorn35.22,653 m2,872 m12:30 PMDrinks, food, doctor, first aid; refills limited to 0.8 l
Egg40.92,132 m2,912 mNone listedWater only; refills limited to 0.8 l
Schwand48.51,554 m3,117 m3:30 PMDrinks, food, first aid
Burglauenen55.3898 m3,372 m5:00 PMDrinks, pasta and potatoes, doctor, first aid, massage, drop bag
Wengen64.21,279 m4,160 m7:30 PMDrinks, food, first aid
Männlichen69.02,228 m5,114 m9:30 PMDrinks, food, warm soup, doctor, first aid
Kleine Scheidegg79.52,050 m5,559 m11:45 PMDrinks, food, doctor, first aid
Eigergletscher83.32,334 m5,961 m12:45 AM SundayTimed checkpoint, no aid
Brandegg90.81,338 m6,033 m2:30 AMDrinks, food, doctor, first aid
Pfingstegg97.21,388 m6,557 m4:15 AMDrinks, food
Grindelwald (finish)101.51,030 m6,640 m5:00 AM SundayDrinks, food, doctor, first aid, massage

Distances and climbing follow the 2026 runner guide, whose table ends at 101.5 km with 6,640 m of climbing; the race page advertises 101 km and 6,700 m, the 2026 supply plan puts the finish at 102.5 km, and the course track on the race page measures 100.7 km. Runners must leave each checkpoint before its barrier, whatever time they arrive. The runner guide lists warm soup at First and Männlichen; the refreshments page and the supply plan also list it at Brandegg. A runner who stops at Burglauenen may run straight to the Grindelwald finish for an E51 shirt and medal, but gets no ranking and no Running Stones.

Sources: Official 2026 runner guide (E101 checkpoint table); Official E101 race page (time limits); Official 2026 E101 race briefing; Official race refreshments page; Official 2026 supply plan (PDF).

Recent E101 winners

Men’s and women’s winners of the last five editions with the course length that year, from UTMB’s official results.

Recent E101 winners
YearCourseMenWomen
2026101 km, 6,700 mStian Dahl Sommerseth (Norway), 11:44:03Alina Wyleżałek (Poland), 14:01:24
202569 km, 4,300 m (shortened for a thunderstorm forecast)Tomáš Fárník (Czech Republic), 07:13:12Daniela Oemus (Germany), 08:11:21
2024100.5 km, 6,541 mAndreas Reiterer (Italy), 11:05:32Hannah Allgood (USA), 13:09:37
2023103.7 km, 6,542 mHannes Namberger (Germany), 11:38:35Katharina Hartmuth (Germany), 13:17:32
2022101 km, 6,700 mJiasheng Shen (China), 10:44:38Katharina Hartmuth (Germany), 13:37:20

In 2026 Manuel Hartweg (Germany, 11:56:18) and Maxime Pellouchoud (Switzerland, 12:23:59) completed the men’s podium, and Daniela Mackner (Switzerland, 14:24:35) and Julia Harnie (France, 14:57:36) the women’s. Hannah Allgood raced as Hannah Osowski in 2024, the name UTMB Live and Plattform J used. Course lengths come from UTMB’s results pages; in 2025 the route was diverted from Feld via Schwendi, Holenstein and Männlichen because of the thunderstorm forecast. The E101 was not held in 2020 or 2021.

Sources: UTMB Live: 2026 E101 ranking; UTMB Live: 2025 E101 ranking; UTMB Live: 2024 E101 ranking; UTMB Live: 2023 E101 ranking; UTMB results: 2026 E101; UTMB results: 2025 E101; UTMB results: 2024 E101; UTMB results: 2023 E101; UTMB results: 2022 E101; Official 2025 route change notice; Plattform J: 2024 race report (German).

Other races at the 2026 Eiger Ultra Trail

The event’s other distances with climbing and 2026 start times, from the organizer’s race pages, the 2026 runner guide and the E250 update.

Other races at the 2026 Eiger Ultra Trail
RaceDistanceClimbingStart
E250 UNESCO Jungfrau-Aletsch Trail (teams of 2 or 3)About 250 km; cut to about 200 km in 202618,000 m plannedPlanned 8:00 AM Wednesday, July 15, in Grindelwald; moved to 3:00 AM Thursday, July 16, in Kandersteg
E51 Panorama Trail51 km3,100 m7:15 AM Saturday, July 18, in Grindelwald (second block 7:45 AM)
E35 North Face Trail35 km2,500 m7:35 AM Saturday, July 18, in Burglauenen (second block 8:05 AM)
E16 Pleasure Trail16 km960 m9:00 AM Saturday, July 18, in Grindelwald (second block 9:30 AM)
Trail Surprise12 to 15 km, announced three days before (12 km in 2026)500 to 1,000 m (700 m in 2026)12:30 PM Friday, July 17, in Grindelwald

For 2027 the E250 starts at 8:00 AM on Wednesday, July 14, in Grindelwald, with a 95-hour limit and a cap of 150 runners; entry is first come, first served, and each runner needs a UTMB Index in the 100K category or a 100 km finish since January 1, 2024. The E51, E35 and E16 run on Saturday, July 17, 2027, and the Trail Surprise on Friday, July 16. The E51 and E35 award 2 Running Stones, the E16 and Trail Surprise 1, and the E250 none. In 2026 Patrick Schnitzer and Janosh Baumgartner won the shortened E250 in 37:20:14, and Luke Grenfell-Shaw won the E51 in a record 4:45:07.

Sources: Official E250 race page; Official E250 2027 regulations (PDF); Official E250 update, July 2026; Official E51 race page; Official E35 race page; Official E16 race page; Official Trail Surprise race page; Official 2026 runner guide; UTMB Live: 2026 event results; Plattform J: 2026 race report (German).

Course & Terrain

Mountain loop starting and finishing in Grindelwald: over Grosse Scheidegg to First, a loop down to Bort and back to First, on over the Faulhorn and past Schynige Platte down to Burglauenen, then back up through Wengen to Männlichen, Kleine Scheidegg and Eigergletscher and down along the foot of the Eiger North Face via Brandegg and Pfingstegg.

Key course features to know before comparing this race:

  • Grosse Scheidegg (1,957 m), the first climb, 1,006 m up in 8.8 km
  • The First Cliff Walk, crossed at the First checkpoint
  • The Faulhorn (about 2,680 m), the highest point, with a helicopter-supplied aid station
  • The traverse past Schynige Platte and the long descent to Burglauenen (898 m)
  • Männlichen (2,228 m) and the Lauberhorn
  • Eigergletscher (2,334 m) and the Eiger Trail along the foot of the North Face

The 2026 runner guide gives the course as 101.5 km with 6,640 m of climbing and descent, between 898 m at Burglauenen and the Faulhorn, which at about 2,680 m is the event’s highest point. The first 35 km hold three big climbs: 1,006 m from Grindelwald to Grosse Scheidegg, 640 m from Bort back up to First after a loop down from First, and 669 m from Feld to the Faulhorn. From the Faulhorn the route traverses past Schynige Platte and loses about 2,250 m over 20 km to Burglauenen, the low point at km 55. The second half climbs 1,742 m in 13.7 km through Wengen to Männlichen (2,228 m), crosses the Lauberhorn to Kleine Scheidegg, climbs again to Eigergletscher (2,334 m) and follows the Eiger Trail below the North Face down toward Brandegg, before a last 524 m climb to Pfingstegg and the drop to Grindelwald. The 2026 briefing warns of signed sections with a risk of slipping or falling, where runners must use the fixed ropes, and of road and railway crossings; after Burglauenen, crossing the tracks while the barrier is down is forbidden. Way markers are reflective and no paint is used, and runners who use poles must carry them from the start.

The E101 starts at 4:00 AM, so the first climb is run by headlamp, and slower runners reach Eigergletscher and the Eiger Trail late on Saturday night, with the finish closing at 5:00 AM Sunday. Long sections run above 2,000 m, and mid-July conditions have varied widely. In 2023 runners raced in heat, and the organizer waived the cold kit for a sunny forecast; in 2024 the route had to be cleared of snow before the race, runners still crossed some snowfields, and heat proved the bigger problem; in 2025 a thunderstorm forecast cut the E101 to about 69 km; and in 2026 changeable, at times intense weather shortened only the E250, while the E101 ran its original course. The equipment page lists a cold kit for the E101, waterproof overtrousers and an insulated down or synthetic jacket, and marks it mandatory, and the organizer can add gear for the forecast. The 2026 briefing tells runners caught in a thunderstorm to leave exposed ground, trees, water and masts and to crouch on their pack.

Format & Support (as run)

Listed qualification and support details
QualificationEntry is by lottery, and every applicant needs a valid UTMB Index in any category, which requires at least one result in the previous 24 months. For 2026, pre-registration ran from September 22 to 29, 2025, results came out on October 1, winners had to pay by October 6, and a second draw for waitlisted runners followed on October 7, after which the organizer declared the E101 sold out. The 2027 lottery ran from 10:00 AM CEST on September 21 to September 28, 2026, with results on September 30, payment due by October 5 and a second draw on October 6; runners drawn out twice in a row get a guaranteed place for 2028. Runners enter alone or in mini groups of two to five, places are split by entry type and nationality, at least 30% of E101 places go to Swiss nationals, and every nation entered gets two guaranteed places. Guaranteed entries also go to Quartz Club members (500 km and at least five Eiger Ultra Trail finishes), the previous year’s podium and category winners, top runners by UTMB Index, Summit Package buyers, participants in the organizer’s guided E101 camp (CHF 589 for 2027) and Grindelwald residents, and elite runners must register at least 60 days before the race. The entry fee was CHF 337.90 in 2026 and is CHF 379.00 for 2027, including VAT and the registration platform’s processing fee. Runners had to be born in 2008 or earlier for 2026 (2009 or earlier for 2027) and must hold insurance that covers search, rescue and evacuation; the registration conditions mention no medical certificate and no charity places. Entries cannot be transferred to another runner, and without private cancellation insurance the refund is 60% up to four months before the event, 30% up to two months before and nothing after that.
Support modelThe 2026 runner guide lists 13 aid stations between the start and the finish, spaced 4.3 to 11.3 km apart. The longest stretch without aid is the 11.3 km from Kleine Scheidegg to Brandegg, which climbs to the Eigergletscher checkpoint (2,334 m), a timed point with no food or drink. Hot food is served at First and Männlichen, which have a warm vegetarian soup, and at Burglauenen (km 55.3), which has pasta and boiled salted potatoes; the refreshments page also lists soup at Brandegg. Egg (km 40.9) has water only, and at Egg and the Faulhorn each runner can refill only 0.8 liters because supplies arrive by helicopter. Doctors are posted at the start, the finish, the Faulhorn, Burglauenen, Männlichen, Kleine Scheidegg and Brandegg, and the 2026 briefing names those five course stations as medical checkpoints, where a doctor or first-aider can pull a runner from the race. No cups are handed out, so runners carry a collapsible cup of at least 15 cl, while coffee, bouillon and soup come in special cups. Every E101 runner wears an organizer GPS tracker, which costs CHF 90 if it is not returned, and must have insurance covering search and rescue, because runners pay for their own helicopter evacuation.
Crew / pacersPacers are not allowed. The 2026 race page listed supporter zones at Grosse Scheidegg, Bort, First, Wengen, Männlichen, Kleine Scheidegg, Brandegg and Pfingstegg, and the 2026 briefing added a support zone at Schynige Platte; the 2027 race page also lists Burglauenen. The regulations allow one assistant per runner in the reserved area of an aid station, who may hand over a bag of up to 30 liters and give small care, such as a massage or blister treatment, while the runner sits; medical help from crews is forbidden. Being accompanied outside the marked zones near aid stations costs 15 minutes, and assistance outside the authorized zones costs one hour. Supporters reach most zones by cable car, train or bus, and Burglauenen has no parking, so the organizer tells them to take the train. A race-day Supporter Ticket (CHF 99 for adults in 2026) covers the lifts and trains around the course, including extra runs: the Firstbahn from 4:45 AM, the Männlichen gondola from Grindelwald and the Wengen–Männlichen cable car until 9:00 PM, special trains from Kleine Scheidegg at 10:00 PM and Brandegg at 10:20 PM, and a special Pfingstegg cable car at 10:30 PM up and 10:45 PM down.
Drop bagsE101 runners get one organizer drop bag at bib pickup (35 liters, according to the bib-distribution page). In 2026 it was handed in next to the start gate between 3:00 and 3:45 AM on race morning, per the briefing, and taken to Burglauenen (km 55.3), roughly halfway, before being returned to the finish area. Bags were ready from Saturday afternoon in the lower level of the Grindelwald sports center and had to be collected by 10:00 AM Sunday, only on presentation of the bib. Poles are not allowed in drop bags, and only the official UTMB World Series bags are transported. Free baggage storage at the sports center was open from 3:30 AM Saturday to 10:00 AM Sunday.

Why This Race Matters

The Eiger Ultra Trail was launched in July 2013 by the Running Grindelwald association, founded by five local residents, as the first ultra-trail event in the Bernese Oberland; the first edition drew 1,155 entries from 27 nations and sold out every race. Ralph Näf led the organizing committee from the launch until 2026, when he handed over to Lukas Hediger, and founding member Werner Marti leads the technical management. The event joined the Ultra-Trail World Tour in 2015 and has been part of the UTMB World Series since 2022, organized on behalf of Ironman Switzerland AG; in 2026 about 4,000 runners from more than 80 nations took part, according to Plattform J. The E101 is its 100K-category race: finishers earn 3 Running Stones and a UTMB Index, the top three men and women qualify directly for the CCC, the 100K race of the UTMB World Series Finals, and Western States accepts it as a qualifier with a 22-hour standard. Past winners include Iker Karrera (2013), Caroline Chaverot (2015), Pau Capell (2018) and Andrea Huser, who won the women’s race in 2016 and 2017; the E101 was not held in 2020 or 2021 because of the pandemic, and in 2025 a thunderstorm forecast cut it to about 69 km. Since 2022 the event has also staged the E250 UNESCO Jungfrau-Aletsch Trail, a race of about 250 km and 18,000 m for teams of two or three that awards no Running Stones. In 2026 a forecast of thunderstorms, heavy rain and hail pushed the E250 start back a day and moved it to Kandersteg on a route cut to about 200 km, while the E101 ran its full course and was won by Stian Dahl Sommerseth (11:44:03) and Alina Wyleżałek (14:01:24).

Historical benchmark notes in the directory record (verify current records with the linked official sources):

  • Men: Jiasheng Shen (China), 10:44:38, 2022, per the organizer’s records page
  • Women: Caroline Chaverot (France), 12:45:41, 2015, per the organizer’s records page
  • Course changes: UTMB lists the E101 at 101 km in 2022, 103.7 km in 2023 and 100.5 km in 2024, so the records come from different versions of the route
  • Shortened course: the 2025 race ran about 69 km after a thunderstorm forecast and was won by Tomáš Fárník (07:13:12) and Daniela Oemus (08:11:21)

Preparing for a Race Like Eiger Ultra Trail by UTMB

The fixed-distance race guide covers the format as a whole. These guides go deeper:

Best Fit

  • Runners with a valid UTMB Index who want 3 Running Stones and a Western States qualifier from a high-alpine 100K
  • Experienced mountain runners comfortable with big climbs, long steep descents and finishing in the dark
  • Runners whose supporters want to follow the race by lift and train rather than by car

Planning Notes

  • Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
  • The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.

Event FAQs

When is the 2027 Eiger Ultra Trail, and how do I get into the E101?

The 2027 event runs July 14 to 18, and the E101 starts at 4:00 AM on Saturday, July 17. Entry is by lottery and needs a valid UTMB Index in any category; pre-registration for 2027 ran September 21 to 28, 2026, with results on September 30 and a second draw on October 6. Runners drawn out twice in a row get a guaranteed place for 2028, and the 2027 entry fee is CHF 379.

What is the E101 course record?

The organizer lists Jiasheng Shen’s 10:44:38 from 2022 as the men’s record and Caroline Chaverot’s 12:45:41 from 2015 as the women’s record. The route has changed several times since 2013, so the records were set on different versions of the course. In 2026 Stian Dahl Sommerseth won in 11:44:03 and Alina Wyleżałek in 14:01:24.

What is the E101 time limit?

25 hours: the race starts at 4:00 AM Saturday and the finish closes at 5:00 AM Sunday. There are 13 time barriers on the course, from Grosse Scheidegg at 6:30 AM to Pfingstegg at 4:15 AM, and runners must leave each checkpoint before its barrier, whatever time they arrive. In 2026, 425 of 567 starters finished, about 75%.

How long is the E101, and how much climbing does it have?

The organizer advertises 101 km (about 63 miles) with 6,700 m (about 22,000 ft) of climbing and about the same descent. Its own 2026 documents vary: the runner guide’s checkpoint table ends at 101.5 km with 6,640 m of climbing, the supply plan says 102.5 km, and the race-page track measures 100.7 km. The high point is the Faulhorn at about 2,680 m (8,790 ft), and the low point is Burglauenen at 898 m (2,950 ft), just past halfway.

Can I have a crew or pacer at the E101?

Pacers are not allowed. Supporters can meet runners in marked zones at aid stations such as Grosse Scheidegg, First, Wengen, Männlichen, Kleine Scheidegg and Brandegg, where one assistant per runner may hand over a bag of up to 30 liters. Most zones are reached by cable car, train or bus, and a race-day Supporter Ticket (CHF 99 for adults in 2026) covers the local lifts and trains, including extra late-evening runs.

Verification & Sources

Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated October 25, 2026. Organizers can revise details after review.

  1. Official E101 race page — https://eiger.utmb.world/races/E101
  2. Official 2026 E101 race page (archived April 14, 2026) — https://web.archive.org/web/20260414091722/https://eiger.utmb.world/races/E101
  3. Official home page and race list (2027 dates and entry status) — https://eiger.utmb.world/
  4. Official 2027 registration page (lottery, fees, age limits) — https://eiger.utmb.world/registration
  5. Official 2026 registration page (archived October 17, 2025) — https://web.archive.org/web/20251017144156/https://eiger.utmb.world/races-info/runners/registration
  6. Official 2026 regulations — https://eiger.utmb.world/races-info/runners/regulation-2026
  7. Official regulations page — https://eiger.utmb.world/races-info/runners/regulation
  8. Official E250 2027 regulations (PDF) — https://pdf.utmb.world/image/upload/v1788510703/eiger/Regulations/Regulations%202027/Race_Regulations_E250_2027_06d38bc411.pdf.pdf
  9. Official mandatory equipment — https://eiger.utmb.world/races-runners/runners/mandatory-equipment
  10. Official race refreshments — https://eiger.utmb.world/races-info/runners/race-refreshments
  11. Official 2026 supply plan (PDF) — https://pdf.utmb.world/image/upload/v1776434471/eiger/Pages/Refreshment%20Page/Refreshment%20plan%202026/eigerultratrail_verpflegungsplan_A4_2026_79e9525021.pdf.pdf
  12. Official 2026 runner guide (PDF) — https://pdf.utmb.world/image/upload/v1781670810/eiger/Races/Guides%2026/2026_EN_RUNNER_GUIDE_BY_UTMB_EUT_low_621022de8b.pdf.pdf
  13. Official 2026 E101 race briefing (PDF) — https://pdf.utmb.world/image/upload/v1783657775/eiger/Races/Briefing%202026/Briefing_E101_2026_eba837418e.pdf.pdf
  14. Official drop bag and luggage depot — https://eiger.utmb.world/races-info/runners/drop-bag
  15. Official bib distribution — https://eiger.utmb.world/races-info/runners/start-number-distribution
  16. Official program — https://eiger.utmb.world/races-info/runners/program
  17. Official Supporter Ticket — https://eiger.utmb.world/races-info/supporter/supporter-ticket
  18. Official travel and parking — https://eiger.utmb.world/discover/discover-grindelwald/how-to-get-there
  19. Official leaderboard and records — https://eiger.utmb.world/races-info/runners/leaderboard-records
  20. Official results page — https://eiger.utmb.world/races-info/runners/results
  21. Official values and event dates (founders, 2026 to 2029 dates) — https://eiger.utmb.world/get-excited/about-us/our-values
  22. Official Myth Eiger page (2013 launch, E250 since 2022) — https://eiger.utmb.world/discover/discover-the-event/myth-eiger
  23. Official Quartz Club — https://eiger.utmb.world/discover/discover-the-event/eiger-ultra-trail-quartz-club
  24. Official camps (Werner Marti, guaranteed entry) — https://eiger.utmb.world/discover/discover-the-trails/camps
  25. Official UTMB World Series page — https://eiger.utmb.world/discover/discover-the-event/utmb-world-series
  26. Official E250 race page — https://eiger.utmb.world/races/E250
  27. Official E51 race page — https://eiger.utmb.world/races/E51
  28. Official E35 race page — https://eiger.utmb.world/races/E35
  29. Official E16 race page — https://eiger.utmb.world/races/E16
  30. Official Trail Surprise race page — https://eiger.utmb.world/races/trail-surprise
  31. Official E250 update, July 2026 — https://eiger.utmb.world/news/race-update-2026
  32. Official 2025 route change notice — https://eiger.utmb.world/news/route-change
  33. Official 2023 cold kit notice — https://eiger.utmb.world/news/cold-kit
  34. UTMB Live: 2026 E101 ranking — https://live.utmb.world/eigerultratrail/2026/E101
  35. UTMB Live: 2026 event results — https://live.utmb.world/eigerultratrail/2026
  36. UTMB Live: 2025 E101 ranking — https://live.utmb.world/eigerultratrail/2025/E101
  37. UTMB Live: 2024 E101 ranking — https://live.utmb.world/eigerultratrail/2024/E101
  38. UTMB Live: 2023 E101 ranking — https://live.utmb.world/eigerultratrail/2023/E101
  39. UTMB results: 2026 E101 — https://utmb.world/utmb-index/races/3970.eigerultratrail-r-byutmbe101-ultratrail.2026
  40. UTMB results: 2025 E101 — https://utmb.world/utmb-index/races/3970.eigerultratrail-r-byutmbe101-ultratrail.2025
  41. UTMB results: 2024 E101 — https://utmb.world/utmb-index/races/3970.eigerultratrail-r-byutmbe101-ultratrail.2024
  42. UTMB results: 2023 E101 — https://utmb.world/utmb-index/races/3970.eigerultratrail-r-byutmbe101ultratrail.2023
  43. UTMB results: 2022 E101 — https://utmb.world/utmb-index/races/3970.eigerultratrail-r-byutmbe101ultratrail.2022
  44. UTMB results: 2018 E101 — https://utmb.world/utmb-index/races/3970.eigerultra-trail-r-e101.2018
  45. UTMB results: 2017 E101 — https://utmb.world/utmb-index/races/3970.eigerultra-trail-r-e101.2017
  46. UTMB results: 2016 E101 — https://utmb.world/utmb-index/races/3970.eigerultratraile101.2016
  47. UTMB results: 2015 E101 — https://utmb.world/utmb-index/races/3970.eigerultratraile101.2015
  48. UTMB results: 2013 E101 — https://utmb.world/utmb-index/races/3970.eigerultratraile101.2013
  49. UTMB news: 2023 Eiger Ultra Trail results — https://utmb.world/news/results-Eiger-next-event-Speedgoat
  50. Western States qualifying races — https://www.wser.org/qualifying-races/
  51. Plattform J: first edition and 2014 registration (German, 2013) — https://www.plattformj.ch/artikel/127221/
  52. Plattform J: 2020 cancellation and 2021 registration (German) — https://www.plattformj.ch/artikel/186661/
  53. Plattform J: 2021 special edition without the E101 (German) — https://www.plattformj.ch/artikel/190821/
  54. Plattform J: 2021 special edition results (German) — https://www.plattformj.ch/artikel/192050/
  55. Plattform J: 2024 race report (German) — https://www.plattformj.ch/artikel/223244/
  56. Plattform J: E250 shortened for weather, July 15, 2026 (German) — https://www.plattformj.ch/artikel/244893/
  57. Plattform J: 2026 race report (German) — https://www.plattformj.ch/artikel/245021/
  58. Multiday Running event directory review scope: October 25, 2026.