Tatsuya (光井達也) Mitsui
Born : 1963 Cat. M60 Ultrarunner since 2013 JPN
26
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
35
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
68,1%
Rank quotient ?This runner's calculation uses 26 eligible race(s): Σ(rank − 1) = 9 102; Σ finishers = 13 368. 9 102 / 13 368 × 100 = 68.09%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed26
Km — ultra races1 785 km
> 100 km2
Longest race109,2 km

Km per year (ultra races)

210
3 races
2022
120
2 races
2023
229
3 races
2024
101
1 race
2025
46
1 race
2026

Race types (share of distance)

Road38,2%
Trail61,8%

HISTORY

26 race(s)
DateRacePerf.Rk
2026
12.04 46km JPN1st Wake Alps Trail 9:56:02 h217
2025
15.11 101km JPN4th Kumagawa Revival Trail 27:39:15 h118
2024
08.12 70km JPN11th Izu Trail Journey 13:16:21 h1145
14.07 109.2km JPN16th OSJ Ontake 100km Ultra Trail 19:16:38 h860
25.05 50km JPN3rd Tokyo Grand Trail - 50km 16:20:56 h102
2023
10.12 70km JPN10th Izu Trail Journey 13:36:06 h1249
10.06 50km JPN3rd Okushinano 100 - 50 km 9:26:01 h173
2022
11.12 70km JPN9th Izu Trail Journey 13:31:21 h1233
19.06 60km JPN8th Echigo Country Trail 11:12:13 h143
04.06 80km JPN2nd Minakami Trail Race - 80km 23:58:38 h87
2019
08.12 71.7km JPN6th Izu Trail Journey 11:50:03 h907
19.10 51.4km JPN10th Inagawa 100km Ultra-Marathon 5:52:48 h135
13.10 47km JPN13th Madarao Forest Trails 50km 7:27:26 h213
16.06 53km JPN5th Echigo Country Trail 9:23:17 h268
2018
20.10 100km JPN9th Inagawa 100km Ultra-Marathon 13:15:19 h50
2017
21.10 100km JPN8th Inagawa 100km Ultra-Marathon 15:12:15 h139
24.09 66km JPN20th Muraoka 66 km Ultra Marathon 8:34:07 h86
03.09 49.6km JPN6th Trainic world Ogose-Tokigawa Trail Run 50km 9:31:57 h230
02.07 100km JPN1st Nikko 100km Ultramarathon 13:19:40 h699
18.06 53km JPN3rd Echigo Country Trail 8:39:04 h152
2016
02.10 50km JPN10th Madarao Forest Trails 50km 7:40:01 h227
25.09 66km JPN19th Muraoka 66 km Ultra Marathon 8:37:32 h54
2015
18.10 73km JPN6th OSJ Hyonosen Mountains Trail Race 13:09:42 h309
27.09 66km JPN18th Muraoka 66 km Ultra Marathon 7:38:17 h19
2014
28.09 66km JPN17th Muraoka 66 km Ultra Marathon 9:39:14 h179
2013
29.09 66km JPN16th Muraoka 66 km Ultra Marathon 8:50:58 h134