Makoto (石川誠) Ishikawa
ID 680143
Born : 1970 Cat. M55 Ultrarunner since 2002 JPN
24
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
43
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
29,2%
Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 5 740; Σ finishers = 19 648. 5 740 / 19 648 × 100 = 29.21%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24
Km — ultra races2 284 km
> 100 km6
> 160 km1
Longest race167,0 km
7th Ultra-Trail Mt. Fuji (UTMF) — 22/4/2022

Km per year (ultra races)

221
2 races
2022
2023
269
3 races
2024
50
1 race
2025
2026

Race types (share of distance)

Road56,5%
Trail41,3%
Ult.Walk2,2%

Records

50 km6h26'02100 km9h20'43

HISTORY

24 race(s)
DateRacePerf.Rk
2025
20.12 50km JPN2nd One-day walking - Kanto Chiho 8:26:30 h88
2024
23.08 101km JPN11th World Cultural Heritage "Fuji" Foot Race 12:53:44 h35
28.04 50km JPN17th Ishioka Trail Run 6:26:02 h45
21.04 118km JPN34th Fuji 5 Lakes 118 km Challenge 13:36:03 h145
2022
19.11 54km JPN5th Geki Zaka 54 km 4:55:27 h8
22.04 167km JPN7th Ultra-Trail Mt. Fuji 30:22:40 h278
2020
13.12 66km JPN7th Izu Trail Journey 9:10:52 h230
2019
21.09 143km JPN6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup 30:59:30 h183
11.05 106km JPN4th Trainic World 100 km in Sai-No-Kuni 24:15:19 h51
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 10:28:38 h209
2018
09.12 71.7km JPN5th Izu Trail Journey 9:41:25 h156
07.10 71.5km JPN26th Hasetsune Cup - Japan Mountain Endurance Race 14:27:20 h293
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 9:29:20 h57
2017
17.12 68km JPNCoast to Coast 70k Trail Run 8:46:01 h74
23.04 100km JPN27th Fuji 5 Lakes 100 km Challenge 9:20:43 h54
2016
16.10 100km JPN22nd River Shimanto 100km 10:14:06 h175
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 11:03:07 h252
2015
19.04 118km JPN25th Fuji 5 Lakes 118 km Challenge 14:20:04 h366
2014
12.10 100km JPN10th Echigo Kubikino 100km Ultramarathon 13:21:36 h1181
2010
09.10 100km JPN8th Echigo Kubikino 100km Ultramarathon 13:17:02 h828
2008
11.10 100km JPN7th Echigo Kubikino 100km Ultramarathon 12:36:24 h440
2006
09.10 100km JPN6th Echigo Kubikino 100km Ultramarathon 11:44:42 h265
2004
16.05 100km JPN10th Yatsugatake Nobeyama 100 km 12:38:56 h222
2002
12.05 100km JPN8th Yatsugatake Nobeyama 100 km 11:42:43 h129