The greatest distance covered in 144 hours. Explore official performances and your own targets.
144 hours · Average pace 8:16 min/km (including stops)
Ratified WBP
Matthieu Bonne · BEL
Balatonfüred (HUN) · 5–11 September 2024
IAU sourceSource checked 2026-10-01
Source table updated 2026-05-06
Listed by IAU as the current men’s six-day World Best Performance.
144 hours · Average pace 9:18 min/km (including stops)
Ratified WBP
Stine Rex · DEN
Aabybro (DEN) · 2025 (see source-date note)
IAU sourceSource checked 2026-10-01
Source table updated 2026-05-06
Current ratified women’s WBP in the IAU table. Its date field reads 31 August–10 September 2025, longer than six days; the precise six-day interval is therefore not asserted here. Megan Eckert’s newer performance is listed separately pending ratification.
These performances have been reported by the governing body, but are not listed here as ratified records or world best performances.
144 hours · Average pace 8:26 min/km (including stops)
Pending ratification
Megan Eckert · USA
Balatonfüred (HUN) · 3–9 September 2026
IAU sourceSource checked 2026-10-01
The IAU technical delegate’s report of 11 September 2026 explicitly states that this six-day World Best Performance is still to be ratified. The IAU calendar gives 3 September as the start of the 144-hour event.
The clock runs continuously for 144 hours, including all breaks. The greatest total distance wins; average pace includes stopped time. This is not a Backyard Ultra, where a fixed-distance yard starts every hour.Confirm the record’s surface, athlete classification, race category, ratification status, and date before comparing performances. The mile can refer to a track mile or a road mile; these are distinct record categories. Ultra distances may have additional surface and recognition distinctions.
Running records can change. Always verify official record databases for competition-critical information.