Hiroshi (小山浩史) Koyama
ID 1862045
Ultrarunner since 2022 JPN
4
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
33,4%
Rank quotient ?This runner's calculation uses 4 eligible race(s): Σ(rank − 1) = 684; Σ finishers = 2 048. 684 / 2 048 × 100 = 33.40%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed4
Km — ultra races461 km
> 100 km1
> 160 km1
Longest race160,9 km
10th Lake Biwa Charity 100mi Walking Tournament — 19/10/2024

Km per year (ultra races)

100
1 race
2022
100
1 race
2023
161
1 race
2024
100
1 race
2025
2026

Race types (share of distance)

Ult.Walk100,0%

Records

100 km20h08'01100 mi25h01'45

HISTORY

4 race(s)
DateRacePerf.Rk
2025
01.11 100km JPN1st BIWA100 Ultra Walk 20:42:54 h151
2024
19.10 100mi JPN10th Lake Biwa Charity 100mi Walking Tournament 25:01:45 h272
2023
14.10 100km JPN9th Lake Biwa Charity 100km Walking Tournament 20:08:01 h68
2022
15.10 100km JPN8th Lake Biwa Charity 100km Walking Tournament 27:29:18 h197