Build a system that can last six days
6-Day Races
A 144-hour fixed-time event where sustainable routines and recovery choices matter across nearly a full week.
Cover image: AI-generated illustration, not a photo of a specific race.
How the Format Works
A six-day race gives runners 144 hours to accumulate distance, usually on a short measured loop with a nearby support area. Movement, meals, sleep, clothing, hygiene, and foot care all become parts of one continuous race system.
This format magnifies small failures. Sustainable effort, repeatable routines, early problem-solving, and the willingness to change the plan matter more than forcing an ideal daily mileage schedule.
Checked figures
Distances that define the format
Six-day marks are world best performances. Since 1 January 2022 the IAU world-record list does not include six days as a record modality, even though the IAU still publishes these performances.
| Measure | Figure |
|---|---|
| Men's world best | 1,045.519 km, Matthieu Bonne, Balatonfüred, 5–11 September 2024 |
| Women's listed world best | 928.577 km, Stine Rex, Aabybro, 31 August–10 September 2025 |
| Mark awaiting ratification | 1,023.948 km, Megan Eckert, EMU 6-day 2026; the IAU report describes it as still to be ratified |
| Listed bests as average speed | 7.3 km/h men, 6.4 km/h women, over 144 hours |
| GOMU 6-day championship, France, April–May 2025 | median 522.7 km, middle 50% 404.2–625.5 km, 115 results |
| EMU 6 Day World Trophy, Hungary, September 2025 | median 509.3 km, middle 50% 345.6–599.6 km, 37 results |
| NZ 6 Day Ultra Marathon, October 2025 | median 434.2 km, middle 50% 306.9–581.6 km, 25 results |
| Across the Years 6 days, December 2025 | median 328.1 km, middle 50% 243.5–487.6 km, 84 results |
Field medians depend on who enters: championship fields run further than open fields with many first-timers. Eckert's 2026 mark should not be treated as the listed world best until the IAU records list says it is.
Sources: IAU records list; IAU world-record guidelines, effective 1 January 2022; IAU report on the EMU 6-day, including the pending Eckert mark; DUV results: GOMU 6-day championship, France, April–May 2025; DUV results: EMU 6 Day World Trophy, Hungary, September 2025; DUV results: NZ 6 Day Ultra Marathon, October 2025; DUV results: Across the Years 6 days, December 2025.
Curated preparation path
Learn, Train, and Plan
1. Understand the Format
Learn how six-day racing works and where it sits among other timed events.
6-Day Races Explained
Format, sleep, pacing, support, self-care, and first-race considerations.
Guide24-Hour vs 48-Hour vs 6-Day
Compare timed formats before committing to the longest duration.
Answer6-Day Race vs Backyard Ultra
Contrast a fixed clock with hourly starts and last-person-standing rules.
2. Build the Training Plan
Train durability and repeatable routines without trying to reproduce six days in practice.
How to Train for a 6-Day Race
An adaptable framework for endurance, walking, systems practice, and recovery.
GuideTapering for Multiday Races
Reduce accumulated fatigue while preserving movement and logistical confidence.
ToolMultiday Pace Calculator
Model moving time, daily rest, breaks, and average-distance scenarios.
3. Manage the Week
Plan rest, walking, food, and decision-making as a flexible daily system.
Sleep Strategy for Multiday Races
Create rest options and safety triggers before cumulative sleep loss builds.
GuideSecond Night Survival Guide
Prepare for the early point when sleep loss can start distorting judgment.
GuideWalking Strategy for Ultramarathons
Make efficient walking a planned skill instead of a late-race fallback.
4. Fuel and Protect
Use variety, early foot care, and tested backups as appetite and fit change.
Gut Training for Ultrarunners
Practice a range of familiar foods and flexible fallback options.
Gear guideFoot Care Kit for Multiday Running
Prepare simple, practiced responses to moisture, friction, debris, and hot spots.
Gear guideShoe Rotation Strategy
Use familiar alternatives when surface, weather, swelling, or pressure points change.
Curated race directory
Active and Upcoming 6-Day Events
2 matching events as of Oct 20, 2026; event source reviews dated June 22, 2026 – October 20, 2026. 4 past editions remain in the directory archive.
Across the Years
Peoria, Arizona, USA
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.
View verified race details →NZ Ultramarathon Festival — 6 Day
Hagley Park, Christchurch, New Zealand
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.
View verified race details →Dates, entry status, routes, and rules can change. Use each event page's official organizer links before registration or travel. Format preparation paths were reviewed October 2, 2026.
6-Day FAQs
How far do runners go in a six-day race?
Across four 2025 six-day fields, the median ranged from 328 km at Across the Years to 523 km at the GOMU championship in France, and the middle half of runners covered roughly 300–600 km. Our recommendation for a first six-day race is 400 km (about 250 miles), with 500 km as the stretch. The IAU-listed world bests are 1,045.519 km (Matthieu Bonne, 2024) and 928.577 km (Stine Rex, 2025).
Should a runner complete a 24-hour race first?
We recommend it, and ideally a 48-hour race too. A 24-hour race of 150 km or more shows you can manage pacing, food and feet through a night; a 48-hour race adds the second night and planned sleep stops that a six-day race repeats five times. Some six-day races also set a qualifying distance.
What matters most in a six-day race?
Starting slowly enough. Keep day one to about a quarter of your target (100–110 km for a 400 km goal), sleep 2–4 hours from the first night, and treat every hot spot within the hour.
Compare Related Formats
48-Hour Races
A two-day fixed-time race where sleep, recovery choices, and the second night become central parts of the plan.
24-Hour Races
A fixed-time race where the clock runs for one full day and every completed lap or measured distance counts.
Backyard Ultras
A last-person-standing format built around one 6.7056 km loop every hour, on the hour, until one runner completes a yard that nobody else finishes.