Yasuko (下山康子) Shimoyama
ID 1882003
Born : 1980 Cat. W45 Ultrarunner since 2023 JPN
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?JPNJapan
58,0%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 3 472; Σ finishers = 5 983. 3 472 / 5 983 × 100 = 58.03%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed5
Km — ultra races450 km
Longest race100,0 km
13th Hida Takayama 100 km Ultramarathon — 8/6/2025

Km per year (ultra races)

2022
170
2 races
2023
100
1 race
2024
100
1 race
2025
80
1 race
2026

Race types (share of distance)

Road84,4%
Trail15,6%

Records

100 km12h37'0850 mi10h58'27

HISTORY

5 race(s)
DateRacePerf.Rk
2026
19.04 80km JPN36th Fuji 4 Lakes 80 km Challenge 10:58:27 h175
2025
08.06 100km JPN13th Hida Takayama 100 km Ultramarathon 12:42:19 h741
2024
21.04 100km JPN34th Fuji 4 Lakes 100 km Challenge 12:54:10 h792
2023
10.12 70km JPN10th Izu Trail Journey 13:38:17 h1266
16.04 100km JPN33th Fuji 4 Lakes 100 km Challenge 12:37:08 h503