Makoto (村井誠) Murai
ID 223265
Born : 1979 Cat. M45 Ultrarunner since 2006 JPN
30
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
9,5%
Rank quotient ?This runner's calculation uses 30 eligible race(s): Σ(rank − 1) = 3 939; Σ finishers = 41 526. 3 939 / 41 526 × 100 = 9.49%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed30
Km — ultra races2 705 km
Longest race100,0 km
41. Lake Saroma 100 km Ultramarathon — 28/6/2026

Km per year (ultra races)

212
3 races
2022
171
2 races
2023
200
2 races
2024
100
1 race
2025
100
1 race
2026

Race types (share of distance)

Road100,0%

Records

100 km8h33'456 h71,30 km

HISTORY

30 race(s)
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 9:44:04 h423
2025
29.06 100km JPN40. Lake Saroma 100 km Ultramarathon 9:29:48 h196
2024
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 9:14:59 h132
21.04 100km JPN34th Fuji 4 Lakes 100 km Challenge 10:14:13 h150
2023
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 9:16:39 h139
08.04 71km JPN18th Toda Saiko 70 km 5:43:35 h8
2022
03.07 8h JPN28th 8-Hour Endurance Race Tokorozawa 73.500 km22
05.06 78km JPN29. Ultramarathon Okumusashi 7:00:32 h51
15.05 60km JPN8th Ishigaki Island Ultra Marathon 5:06:16 h6
2021
10.04 70km JPN16th Toda Saiko 70 km 5:53:37 h53
2020
22.08 63.7km JPN1st Toda Aya Lake Ultra Marathon 5:32:11 h6
05.07 8h JPN26th 8-Hour Endurance Race Tokorozawa 83.300 km12
2019
02.06 78km JPN26. Ultramarathon Okumusashi 6:56:27 h56
2018
30.06 8h JPN24th 8-Hour Endurance Race Tokorozawa 78.400 km18
03.06 78km JPN25. Ultramarathon Okumusashi 7:05:24 h50
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 8:52:23 h17
2017
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 8:52:23 h118
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 8:57:54 h180
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 8:33:45 h18
2015
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 8:35:24 h102
19.04 100km JPN25th Fuji 5 Lakes 100 km Challenge 9:15:22 h44
2014
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 9:36:52 h168
20.04 100km JPN24th Fuji 5 Lakes 100 km Challenge 10:09:20 h126
2013
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 9:24:24 h180
11.05 6h JPNEnteRun 6 hour race Spring 71.300 km6
2012
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 9:12:47 h168
2011
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 9:48:20 h279
2010
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 11:46:11 h734
2007
24.06 100km JPN22. Lake Saroma 100 km Ultramarathon 9:57:37 h319
2006
25.06 100km JPN21. Lake Saroma 100 km Ultramarathon 9:40:51 h188