970.685 km six-day performance
Won the women’s race at Six Jours de France; the IAU record application remained pending clarification as of May 2026.
Source-checked athlete record · Updated Aug 17, 2026
Megan Eckert
Six-day 970.685 km performer and 92-yard backyard runner
Megan Eckert is an American ultrarunner with elite results across six-day, 24-hour, backyard, 100-mile, and 200-mile racing.
🇺🇸 United States
The record so far
Megan Eckert is an American ultrarunner whose results span fixed-time road racing and long trail ultras. At the 2025 Six Jours de France, she covered 970.685 km, the longest women’s six-day performance submitted to the IAU; the governing body’s May 2026 records page still listed the application as pending data clarification.
Eckert has also reached 92 yards at Big Dog’s Backyard Ultra, run 153.420 miles in 24 hours at Desert Solstice, and finished second among women at the 2025 Badwater 135. Her range extends to wins at Angeles Crest 100 and the Six Days in the Dome.
Defining performances
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| Big Dog’s Backyard UltraBackyard ultra | 92 yards · 616.952 km | 12th overall | View ↗ | |
| Badwater 135135-mile road | 26:24:17 | 2nd woman · 8th overall | View ↗ | |
| Six Jours de FranceSix-day roadThe IAU listed the world-record application as pending data clarification in May 2026. | 970.685 km | 1st woman | View ↗ | |
| Desert Solstice24-hour track | 153.420 mi | 3rd woman · 4th overall | View ↗ | |
| Angeles Crest 100100-mile trail | 22:02:52 | 1st woman · 7th overall | View ↗ | |
| Six Days in the DomeSix-day track | 526.301 mi | 1st overall | View ↗ |
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