IAU 100 km world silver medal
Ran a personal-best 7:11:57 in Ames, Spain, finishing 1:26 behind champion Courtney Olsen.
Source-checked athlete record · Updated Oct 12, 2026
Miho Nakata
Former 24-hour world-record holder and 2026 100 km world silver medalist
Miho Nakata won the 2023 IAU 24-hour world title with a then-world-record 270.363 km, plus Asia–Oceania 24-hour gold and 100 km world silver in 2026.
JapanChiba PrefectureW35–39
The record so far
Miho Nakata is a Japanese road and fixed-time ultrarunner from Chiba Prefecture. She won the 2023 IAU 24-Hour World Championship in Taipei with 270.363 km, setting the women’s world record at the time and earning the IAU’s 2023 Athlete of the Year award.
At the 2025 world championship in Albi, Nakata improved her personal best to 271.987 km and earned bronze. Sarah Webster won that race with the current world record, so Nakata’s Taipei mark is described here as a former record rather than a current one.
Nakata also competes at fixed distances and on trail. She placed fourth at the 2024 IAU 100 km World Championship in 7:25:52, won the 2026 IAU 24-Hour Asia and Oceania Championship with 261.170 km, and took silver at the 2026 IAU 100 km World Championship in Ames, Spain, with a personal best of 7:11:57.
Defining performances
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IAU 24-Hour Asia–Oceania champion
Won the women’s championship in Hirosaki with 261.170 km.
IAU 24-Hour world bronze medal
Improved her personal best to 271.987 km in Albi.
World champion and world-record setter
Won the 24-hour world title with a then-record 270.363 km and was later named IAU Athlete of the Year.
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| IAU 100 km World Championship100 km road | 7:11:57 | 2nd woman · Silver medal | View ↗ | |
| Naeba-Sanroku Geopark Tsunan Ultramarathon80 km road | 6:28:18 | 1st woman · 2nd overall | View ↗ | |
| IAU 24-Hour Asia and Oceania Championship24-hour road | 261.170 km | 1st woman · 3rd overall | View ↗ | |
| Fuji 5 Lakes Sparta Challenge120 km road | 9:05:05 | 1st woman · 2nd overall | View ↗ | |
| IAU 24-Hour World Championship24-hour road | 271.987 km | 3rd woman · Bronze medal | View ↗ | |
| IAU 100 km World Championship100 km road | 7:25:52 | 4th woman | View ↗ | |
| IAU 24-Hour World Championship24-hour road | 270.363 km | World champion · Then-world record | View ↗ | |
| IAU 100 km World Championship100 km roadHer IAU Championship debut, run on the Berlin–Bernau course. | 7:19:12 | 6th woman · Team bronze | View ↗ |
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