24-Hour Running Race Calendar

International Ultramarathon Festival — Loutraki

Loutraki, Greece · Track

The 21st International Ultramarathon Festival, an IAU Bronze Label track meeting at the Loutraki Municipal Stadium. Features 48-hour, 24-hour, and 12-hour races on a 400 m track, branded by the organizer as World Cup races.

Edition note: The organizer confirms October 22–24, 2026. Its homepage gives an October 3 application deadline, while the information page describes on-site registration with inconsistent opening and cutoff times. Confirm acceptance directly before travelling; late entry is not assured.

The Endless Mile

Alabaster, Alabama, USA · Road

A 72-hour, 48-hour, and 24-hour festival on a certified, paved, lighted 1.00203-mile loop at Veterans Park.

Edition note: Online registration closed October 19 at 11:59 PM Central Time. The organizer explicitly rules out late or race-day entry. The October 22–25 schedule is unchanged.

Weekend at Burney

Cassel, near Burney, California, USA · Trail

A relaxed 48-hour and 24-hour trail race on a loop of about 4.6 to 4.8 miles past Baum Lake near Burney, California, with about 370 ft of climbing per lap, plus a 12-hour race and a burro race on Saturday.

Edition note: Online registration closed Saturday, October 17 at 11:59 PM Pacific Time; the October 1 swag deadline has also passed. The organizer's pages describe the loop as about 4.8 miles, while the runner's guide and the UltraSignup race names say 4.6 miles; the guide counts 21 loops as 100 miles.

Día de los Muertos Endurance Run

South Beach State Park, Newport, Oregon, USA · Mixed

A timed loop race at South Beach State Park in Newport, Oregon, with 48-, 24-, 12- and 6-hour races and team relays on a 3,856 m loop of mostly flat trail with some pavement, held beside a Día de los Muertos ofrenda.

Edition note: Registration on UltraSignup closes Thursday, October 22 at 11:59 PM Pacific Time, and prices rise after October 15. The free T-shirt was guaranteed only for entries made by October 12. The organizer's event page still carries 2025 dates in its title, but its race calendar and UltraSignup give October 23–25, 2026.

Laufwochenende Brugg

Brugg, Aargau, Switzerland · Road

A 48-hour race with 24-, 12- and 6-hour options on a lit, fully paved 934 m loop on the Aare island at Geissenschachen in Brugg, doubling as the Swiss 48-, 24- and 6-hour championships.

Edition note: The 19th edition. Regular entry closes Wednesday, October 14 (48 hours CHF 220, 24 hours CHF 150); after that a CHF 20 late fee applies. Online entry stays open until October 22, with on-site entry after that, and the organizer says no race is sold out. On October 12 the RaceResult list showed 36 runners in the 48-hour race and 26 in the 24-hour race. The organizer has not linked a 2026 live results page.

Běh na 24 hodin Plzeň

Plzeň, Czechia · Track

A 24-hour race on the athletics track of Plzeň’s municipal stadium in Skvrňany, run alongside 12-hour, 100 km and marathon races, with times also taken at the marathon and 100-mile marks.

Edition note: The 10th edition. Online entry was open on October 12, when 20 runners were on the 24-hour entry list. The fee is 1,300 CZK for the 24-hour, 12-hour or 100 km race and 520 CZK for the marathon, paid by bank transfer by October 20. The organizer has not published a 2026 live results page.

ISOPOL Super24

Veszprém, Hungary · Track

A 24-hour race on a closed 400 m synthetic track in Veszprém, held with 12- and 6-hour races and doubling as the Hungarian 24-hour championship. It is part of the Central-European Ultra Series (CEUS).

Edition note: On October 12 the organizer’s entry page listed the 24-hour individual race as closed except for Hungarian championship entries; the 12-hour race was still open at 30,000 HUF. Each individual race is capped at 60 runners. The organizer promises live coverage and online results, but no 2026 live results page was published on October 12.

Salt Creek 24

Port Angeles, Washington, USA · Mixed

A scenic 24-hour endurance race at Salt Creek Recreation Area on the Olympic Peninsula, on a 1.4-mile loop of paved and unpaved surfaces. Also offers a 12-hour solo race, 24-hour relay teams and an hourly Last Runner Standing up Striped Peak.

Edition note: Registration is open. It closes October 24 at 11:59 AM PDT for the 12-hour race and at 11:59 PM PDT for the 24-hour, relay, Last Runner Standing and pacer entries. Current prices: 24-hour $99, 12-hour $89, Last Runner Standing $99, relay $79 per member.

Antarctic Ice Ultra

Ultima Basecamp, Queen Maud Land, Antarctica · Mixed

A fly-in Antarctic ultra on a 4.2 km out-and-back snow course at Ultima Basecamp in Queen Maud Land, with 50 km to 100-mile races, a 24-hour race and a 24-hour limit.

Edition note: The third edition. Runbuk’s provisional schedule has a mandatory briefing and gear check in Cape Town on November 5, the flight to Ultima Basecamp on November 7, the race on November 8 and the flight back to Cape Town on November 12. Every flight depends on the weather, and the organizer advises keeping at least two weeks free after the planned return. The 2026 entry fee is USD 19,500 (USD 18,500 per person for a team), paid in full at registration, and places are limited by aircraft capacity. The 2026 competitor list showed 31 names on October 20, 2026. The start time has not been published; the end date here allows for the 24-hour limit running into November 9.

Fat Ox Endurance Runs

Goodyear, Arizona, USA · Road

A fixed-time festival on a certified 0.988178-mile concrete loop, headlined by the 48-hour race and 2026 USATF 24-Hour Championships.

Edition note: Online registration closes November 16 at 11:59 PM Mountain Time. The 48-hour race starts November 20 at 8:00 AM; the USATF 24-Hour Championship starts November 21 at 8:00 AM. The organizer also lists race-day registration from 7:00 AM.

Bislett 24-Hour Indoor Challenge

Bislett Stadium, Oslo, Norway · Track

A 24-hour race on the 546.5 m indoor track under the stands of Bislett Stadium in Oslo, with an official 100-mile split, a lottery for 150 places and a 165-runner cap.

Edition note: Sold out. Registration for the 2026 lottery ran from May 1 to May 4 and the draw was on May 5: 683 runners applied for 150 places, and the field is capped at 165. The only way in now is to buy a place from an entrant through the organizer’s resale procedure, open until November 15 with a NOK 400 transfer fee. The organizer lists an IAU Bronze Label, but the IAU calendar entry for 2026 shows no label. The 2026 participant information had not been published on October 20, so the race-day rules below come from the 2025 edition.

Soochow International Ultramarathon

Soochow University Waishuangxi Campus, Shilin District, Taipei, Taiwan · Track

An invitational 24-hour race on the 400 m track of Soochow University’s Waishuangxi campus in Taipei, held since 1999 and certified six times as an IAU Gold Label race.

Edition note: The 2026 date comes from two calendars, not from Soochow University itself. The IAU race calendar lists the race for December 5, 2026, and the Chinese Taipei Association of Ultrarunners (CTAU) calendar lists December 5–6 on the Waishuangxi campus track, names Soochow University as organizer and marks the race as one of Taiwan’s selection races for the 2027 IAU 24H World Championships. On October 20 we found no 2026 announcement on Soochow University’s own website, and the race’s Facebook page and registration page could not be read. CTAU gave September 15 as the entry deadline, and a race-listing site shows entries closed. The IAU calendar shows no label for 2026; Soochow University reported Gold Label certification for the 2024 and 2025 races after they were run.

24 Hores d'Ultrafons en Pista Barcelona

Barcelona, Spain · Track

A charity-focused 24-hour track race at Barcelona's Estadi Municipal Joan Serrahima, accompanied by 12- and 6-hour events.

Desert Solstice Track Invitational

Phoenix, Arizona, USA · Track

An elite invitation-only 24-hour and 100-mile track race at Camelback High School. Limited to 25 runners with qualifying standards. Organized by Aravaipa Running.

Edition note: The current organizer page contains conflicting pacer instructions and some older qualification wording; entrants should confirm the 2026 rules directly.

Across the Years

Peoria, Arizona, USA · Mixed

A New Year fixed-time festival on a 1.42-mile dirt and paved loop at Peoria Sports Complex, with a 6-day race, rolling-start 72- to 6-hour races and 100- and 200-mile options.

Edition note: Registration is open on UltraSignup at late-tier prices, for example $795 for the 6-day, $470 for 72 hours, $325 for 48 hours and $250 for 24 hours, before tax and fees. Online registration closes Sunday, December 20 at 11:59 PM PT; Aravaipa also offers a mail-in entry form, a payment plan and race-day registration at the venue. No field caps are published. On October 20 the 2026–27 live results button on the organizer page had no link yet. UltraSignup’s race-day text names “Saturday, December 27” (2:00–6:00 PM) and 7:00 AM to noon each morning, while the organizer page lists check-in on Sunday, December 27 and race-day registration from 7:00 to 10:00 AM; December 27, 2026 is a Sunday.

Spartanion Tel Aviv 24-Hour

Hayarkon Park, Tel Aviv, Israel · Road

Israel's national 24-hour championship on a fast paved loop in Hayarkon Park, with qualifying standards for the headline race.

Jackalope Jam

Cat Spring, Texas, USA · Mixed

A timed ultrarunning festival at 7IL Ranch, where runners repeat a flat two-mile out-and-back and can choose events lasting up to 100 hours.

Edition note: The festival begins with the 100-hour race on February 17. The 48-hour race starts February 19 and the 24-hour race February 20; both start at 9:00 AM and finish February 21.

Jackpot Ultras

Cornerstone Park, Henderson, Nevada, USA · Mixed

Aravaipa’s timed-race festival at Cornerstone Park offers 48-hour and 24-hour races alongside shorter timed events and fixed distances.

Edition note: The organizer and registration page confirm February 19–21, 2027. Online entry closes February 14 at 11:59 PM Pacific Time. Recheck the selected race schedule: some shorter-race times differ between the two pages.

NZ Ultramarathon Festival — 6 Day

Hagley Park, Christchurch, New Zealand · Road

A fully catered six-day race on a flat 1.9464 km park loop, part of a ten-day Christchurch festival with 72-, 48-, and 24-hour options.

Taiping 24 Hour

Taiping, Perak, Malaysia · Road

A fixed-time festival at Taiping Lake Gardens with 24-, 12-, 6-, and 3-hour challenges. Confirm the final endurance-course measurement with the organizer.

Albi 24 Heures

Albi, France · Mixed

A 24-hour race at Stadium Municipal d'Albi on a flat circuit combining the athletics track and surrounding paved paths.

Result: Sigurdur Tomas Thorisson won the 2026 Albi 24 Heures with 240.1 km (161 laps). Gita Muceniece was second overall and first woman with 231.1 km, ahead of Benoit Gourves (207.3 km). Aurelie Verrier (196.8 km) and Marie-Line Mantoux (189.4 km) were the next women.

Edition note: The 12th edition. Registration closed on October 4 and there is no on-site entry. The 24-hour and 100 km races carry FFA labels; the 2026 race is not an IAU label event, and the French 24-hour championship comes to Albi in October 2027.

Skanderborg Ultra

Skanderborg, Denmark · Mixed

A 48-hour race with 24- and 12-hour options on a 1 km gravel and sidewalk loop at Dyrehaven in Skanderborg, where runners can camp beside the course. The same venue hosts the GOMU 48-Hour World Championship in September 2027.

Result: Emil Ingerslev won the 2026 Skanderborg Ultra 48-hour race with 384 km, and Katja Lykke was first woman and second overall with 352 km. Both totals are above the 48-hour course records the organizer lists (358 km and 286.652 km). Ronni Carlsen (255.059 km) and Sally Barbett (211 km) won the 24-hour race.

Edition note: Registration closed October 1 at 11:59 PM (Danish time). On October 12 the RaceResult entry list showed 81 runners in the 48-hour race, 64 in the 24-hour race and 49 in the 12-hour race. The organizer’s Live Tracking link points to the 2026 RaceResult participant page.

Hainesport Endurance Run

Hainesport, New Jersey, USA · Road

A flat paved-loop festival with 48-hour, two 24-hour starts, 12-hour, relay, and 100-mile options at Hainesport Township Park.

Result: Lisa Perry won the 48-hour race outright with 141.76 miles (143 laps), ahead of Thomas Crayton on 138.78 miles. Sean O’Connor won the 100-mile race in 16:05:12 and Thomas Pulaski the Saturday 24-hour with 100.12 miles.

48 Heures de Royan

Royan, France · Road

A French fixed-time festival on a traffic-free stadium circuit of about one kilometre, led by the 48-hour race.

Result: Rodrigo Freeman Lopez won the 2026 48 Heures de Royan with 301.4 km (264 laps), ahead of Said Bourjila with 272.8 km. Beatrice Bourlon was the first woman and third overall with 269.4 km. In the 24-hour race, Christophe Pubert led with 191.7 km and Sophie Boiron was the first woman with 167.8 km.

Edition note: The organizer lists registration as closed. The 48-hour race is October 9–11, with the 24-hour race October 10–11 and the 12-hour race on October 10. The field is capped at 130 across all three races.

Self-Transcendence 24 Hour Track Race

Tooting Bec Athletics Track, London, UK · Track

Incorporates the British 24-Hour Championships 2026. An IAU Bronze Label event limited to 55 experienced ultra-runners, held on the Tooting Bec Athletics Track — the race's long-standing London home.

Result: George Rickwood won with 254.045 km and Laura Watts won the women's race with 217.386 km.

IAU 24H Asia & Oceania Championships

Hirosaki City, Aomori Prefecture, Japan · Track

The official IAU continental championship for 24-hour running in the Asia and Oceania region, held at Hirosaki City Sports Park.

Result: Amar Singh Devanda won the men's race with 282.881 km and Miho Nakata won the women's race with 261.170 km, from a field of 81 athletes representing nine federations.

Myrtle Beach 24 Hour Endurance Run

Myrtle Beach, South Carolina, USA · Road

A USATF-certified 1.08-mile paved loop course in The Market Common area. Annual event organized by the City of Myrtle Beach Parks & Recreation.

Result: Pat Hasler won the inaugural race with 252.038 km and Emily Lyons won the women's race with 166.951 km, from 79 finishers.