Taipei 48-Hour champion
Won the women’s race with 360.405 kilometers, an age-group world record according to the IAU’s race report.
Athlete profile · Sources reviewed Oct 23, 2026
Tsai Wen-Ya
Women’s 3,100-mile world-record holder
Tsai Wen-Ya holds the women’s 3,100-mile record at 45 days 12:28:44 and won the women’s 2025 Taipei 48-hour race with 360.405 km.
Chinese TaipeiTaichung City, TaiwanW55–59
World Team Championship · 28 yardsBackyard Ultra World Team Championship 2026 · Assist
28 yards completed before stopping
Completed 28 yards, then finished yard 29 over the hour. The assist in Chinese Taipei’s national race: the last runner to stop before the winner. Chinese Taipei’s national race is over: the team finished on 309 yards, 53rd in the standings at this point.
Final results after yard 124 (16:07 UTC, 22 October), matching the organizer's official leaderboard. Organizer results ↗ Championship guide →
The record so far
Tsai Wen-Ya is a Taiwanese multiday ultrarunner whose results extend from 24 and 48 hours to ten days and the 3,100-mile Self-Transcendence Race.
In her first 3,100-mile start in 2023, Tsai finished in 45 days, 12 hours, 28 minutes, and 44 seconds. She placed third overall and lowered the women’s world record by more than three days, surpassing Kaneenika Janakova’s 2017 mark.
Tsai has continued to produce significant fixed-time results. She won the women’s race at the 2025 Taipei Ultramarathon with 360.405 kilometers in 48 hours, a performance the IAU race report identified as a world age-group record, and represented Chinese Taipei at the 2025 IAU 24-Hour World Championships and the 2026 IAU 24-Hour Asia and Oceania Championships. She also won the 2025 Taipei Backyard Ultra outright with 37 yards and was selected on Chinese Taipei’s 15-runner pre-race roster for the 2026 Backyard Ultra World Team Championship, which started on October 17.
Defining performances
↗
Women’s 3,100-mile world record
Finished in 45 days, 12:28:44, placing first woman and third overall in her debut.
Self-Transcendence Ten-Day women’s champion
Covered 671.7 miles, more than 1,080 kilometers, and placed third overall.
Chinese Taipei six-day age-group record
Set a national W50–54 record before moving up to the 3,100-mile distance the following year.
Performance history
Selected results, not a complete race history. Rankings and record descriptions reflect the cited sources at their review dates. Distances may use different rounding conventions.
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| IAU 24-Hour Asia and Oceania Championships24-hour road | 192.060 km | 23rd woman | View ↗ | |
| IAU 24-Hour World Championships24-hour road | 186.645 km | 86th woman · Chinese Taipei team | View ↗ | |
| Taipei Ultramarathon48-hour roadThe IAU’s race report calls it an age-group world record, but as of October 2026 the IAU record table still lists Galina Eremina’s 357.987 km for W55. | 360.405 km | 1st woman · Unratified age-group record | View ↗ | |
| Taipei Backyard UltraBackyard ultra | 37 yards · 248.122 km | 1st overall | View ↗ | |
| Soochow/Taipei 24-Hour Ultramarathon24-hour track | 126.102 miles · 202.941 km | 6th woman · 15th overall | View ↗ | |
| IAU 24-Hour World Championships24-hour road | 202.918 km | 43rd woman | View ↗ | |
| Self-Transcendence 3,100 Mile Race3,100-mile road | 45d 12:28:44 | 1st woman · 3rd overall · world record | View ↗ | |
| Self-Transcendence Ten-Day RaceTen-day road | 671.7 miles · 1,080.9 km | 1st woman · 3rd overall | View ↗ | |
| IAU 24-Hour Asia and Oceania Championships24-hour road | 181.600 km | 6th woman · 14th overall | View ↗ |
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