Takuma (箭内琢磨) Yanai
Born : 1971 Cat. M55 Ultrarunner since 2014 JPN
28
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
31,1%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 5 048; Σ finishers = 16 242. 5 048 / 16 242 × 100 = 31.08%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed28
Km — ultra races2 329 km
> 100 km3
Longest race143,0 km

Km per year (ultra races)

250
3 races
2022
75
1 race
2023
100
1 race
2024
2025
2026

Race types (share of distance)

Road53,6%
Trail46,4%

HISTORY

28 race(s)
DateRacePerf.Rk
2024
21.04 100km JPN5th Yamadera Zao 100 km Ultra Marathon 12:56:36 h68
2023
09.07 75km JPN1st Mt. Gassan Foot Ultra Marathon 9:09:03 h33
2022
21.08 50km JPN3rd OSJ Mahirusanchi Trail 50K 10:09:53 h87
22.05 100km JPN28th Yatsugatake Nobeyama 100 km 12:59:27 h486
24.04 100km JPN3rd Yamadera Zao 100 km Ultra Marathon 16:23:18 h21
2021
20.11 106km JPN7th FunTrails100K Round 25:58:51 h283
31.10 55km JPN2nd Yamadera Zao 100 km Ultra Marathon 5:41:37 h30
2019
21.09 143km JPN6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup 33:17:01 h302
13.07 100km JPN12th OSJ Ontake 100km Ultra Trail 13:51:30 h194
23.06 72.6km JPN6. Spatrail - Shima to Kusatsu 72K 11:13:18 h216
01.06 59km JPN11th OSJ Okukuji Trail 60k 12:48:24 h233
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 11:56:38 h389
2018
09.12 71.7km JPN5th Izu Trail Journey 11:36:46 h512
17.11 52km JPN4th FunTrails50K Two Lakes&Green line 8:36:20 h127
30.06 80km JPN8th Utsukushigahara 80 km Trail Run 14:28:38 h161
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 13:40:28 h172
2017
21.10 100km JPN8th Inagawa 100km Ultra-Marathon 11:38:26 h15
10.09 50km JPN10th OSJ Adatara Trail 50K 11:58:00 h57
02.07 100km JPN1st Nikko 100km Ultramarathon 10:53:15 h158
11.06 100km JPN13th Iwate Ginga 100km Marathon Challenge 9:49:38 h111
2016
11.09 50km JPN9th OSJ Adatara Trail 50K 9:35:07 h73
28.08 70km JPN3rd Tsukuba Renjyo 70 km Road & Trail Run 9:35:44 h84
12.06 100km JPN12th Iwate Ginga 100km Marathon Challenge 11:14:17 h208
2015
26.09 76.7km JPN4th Shizuoka to Yamanashi 16:19:10 h318
13.09 50km JPN8th OSJ Adatara Trail 50K 10:40:36 h120
14.06 100km JPN11th Iwate Ginga 100km Marathon Challenge 10:25:19 h140
2014
07.09 50km JPN7th OSJ Adatara Trail 50K 11:13:41 h161
08.06 100km JPN10th Iwate Ginga 100km Marathon Challenge 11:35:28 h317