Kazuya (御子柴和弥) Mikoshiba
Born : 1971 Cat. M55 Ultrarunner since 2010 JPN
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
49
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
23,5%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 6 087; Σ finishers = 25 909. 6 087 / 25 909 × 100 = 23.49%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed29
Km — ultra races2 629 km
> 100 km5
Longest race146,0 km

Km per year (ultra races)

100
1 race
2022
259
3 races
2023
309
3 races
2024
150
2 races
2025
100
1 race
2026

Race types (share of distance)

Road46,6%
Trail48,3%
Stage5,2%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

HISTORY

28 race(s) · 2 stage(s) nested
DateRacePerf.Rk
2026
17.05 100km JPN32th Yatsugatake Nobeyama 100 km 11:46:21 h257
2025
23.09 50km JPN2nd OSJ Ontake 50km 4:55:27 h51
18.05 100km JPN31th Yatsugatake Nobeyama 100 km 12:28:36 h399
2024
14.07 109.2km JPN16th OSJ Ontake 100km Ultra Trail 13:40:00 h172
19.05 100km JPN30th Yatsugatake Nobeyama 100 km 10:49:50 h118
21.04 100km JPN34th Fuji 4 Lakes 100 km Challenge 10:53:17 h241
2023
05.11 50km JPN7th Koshu Alps Lily Route Challenge 9:11:52 h20
16.07 109.2km JPN15th OSJ Ontake 100km Ultra Trail 14:24:04 h105
21.05 100km JPN29th Yatsugatake Nobeyama 100 km 11:10:25 h74
2022
22.05 100km JPN28th Yatsugatake Nobeyama 100 km 13:15:49 h555
2021
03–04.04 136km/2stages JPN9th Arakawa Riverside Journey Stage Race 14:41:00 h3 🥉
2020
24.10 146km JPN2nd Autumn leaves in Okumusashi / Chichibu Journey run 17:18:40 h20
04.10 100km JPN7th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K 10:40:17 h21
2019
17.08 101km JPN7th World Cultural Heritage "Fuji" Foot Race 12:16:07 h18
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 12:02:58 h414
2018
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 12:17:32 h451
2017
21.05 100km JPN23rd Yatsugatake Nobeyama 100 km 11:15:52 h154
2016
19.11 52km JPN2nd FunTrails50K Two Lakes&Green line 7:13:11 h22
22.05 100km JPN22nd Yatsugatake Nobeyama 100 km 13:14:36 h796
2015
26.09 76.7km JPN4th Shizuoka to Yamanashi 12:45:03 h68
18.07 100km JPN8th OSJ Ontake 100km Ultra Trail 12:46:57 h89
17.05 100km JPN21st Yatsugatake Nobeyama 100 km 11:33:34 h288
2014
12.10 71.5km JPN22nd Hasetsune Cup - Japan Mountain Endurance Race 12:51:12 h450
18.05 100km JPN20th Yatsugatake Nobeyama 100 km 11:35:32 h235
2013
28.07 77km JPN20. Ultramarathon Okumusashi 8:06:50 h222
19.05 100km JPN19th Yatsugatake Nobeyama 100 km 12:21:38 h375
2012
20.05 100km JPN18th Yatsugatake Nobeyama 100 km 12:47:08 h441
2010
04.07 50km JPN2nd OSJ Shiga Kogen Trail 50K 8:21:24 h56