Katsutoshi (藤尾勝俊) Fujio
ID 953811
Born : 1983 Cat. M40 Ultrarunner since 2017 JPN
37
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
2
Countries visited ?JPNJapanTHAThailand
30,7%
Rank quotient ?This runner's calculation uses 37 eligible race(s): Σ(rank − 1) = 9 679; Σ finishers = 31 515. 9 679 / 31 515 × 100 = 30.71%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed37
Km — ultra races3 380 km
> 100 km8
> 160 km3
Longest race167,0 km
11th Ultra-Trail Mt. Fuji (UTMF) — 24/4/2026

Km per year (ultra races)

566
7 races
2022
416
5 races
2023
531
6 races
2024
685
7 races
2025
334
3 races
2026

Race types (share of distance)

Road47,3%
Trail52,7%

Records

50 km9h20'57100 km9h45'5050 mi9h27'34

HISTORY

37 race(s)
DateRacePerf.Rk
2026
06.06 53km JPN9th Mizukami Mountain Party 10:18:50 h53
09.05 114km JPN4th Aso Volcano Trail 19:58:20 h94
24.04 167km JPN11th Ultra-Trail Mt. Fuji 38:48:57 h587
2025
06.12 48km THA2nd Chiangmai Thailand by UTMB - HMONG 50-DAY 8:56:31 h528
15.11 167km JPN4th Kumagawa Revival Trail 37:03:01 h46
18.10 100km JPN8th Iki 100 km Ultra Marathon 10:53:34 h69
10.08 50km JPN4th Yacchiro Dragon Trail 11:31:51 h109
29.06 100km JPN40. Lake Saroma 100 km Ultramarathon 10:18:25 h403
07.06 53km JPN8th Mizukami Mountain Party 10:57:42 h88
25.04 167km JPN10th Ultra-Trail Mt. Fuji 36:41:41 h464
2024
15.12 100km JPN7th Okinawa 100km Ultramarathon 10:52:37 h107
16.11 101km JPN3rd Kumagawa Revival Trail 22:15:46 h68
19.10 100km JPN7th Iki 100 km Ultra Marathon 13:44:24 h251
21.07 66km JPN12th Kirishima Ebino-kougen Extreme Trail 12:28:46 h146
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 9:48:15 h243
01.06 64km JPN7th Mizukami Mountain Party 12:05:21 h66
2023
16.07 65km JPN14th Nozawa Onsen 4100D Mountain Trail 11:01:30 h83
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 12:25:23 h1254
10.06 100.8km JPN3rd Okushinano 100 16:13:39 h160
13.05 50km JPN9th Mt. Hiei Int. 50 km Trail Run 9:20:57 h243
16.04 100km JPN33th Fuji 4 Lakes 100 km Challenge 10:32:04 h131
2022
11.12 70km JPN9th Izu Trail Journey 9:31:09 h202
15.10 73km JPN7th Gasando Trail running race 10:39:47 h54
18.09 109km JPN14th Shinetsu Five Mountains Trail 110km 21:27:53 h245
17.07 65km JPN13th Nozawa Onsen 4100D Mountain Trail 11:53:28 h180
28.05 80km JPN2nd Lake Suwa Ultra Marathon - 80 km 9:27:34 h15
23.04 69km JPN1st KAI 69k 14:50:41 h186
17.04 100km JPN32th Fuji 5 Lakes 100 km Challenge 12:32:08 h553
2019
13.07 65km JPN10th Nozawa Onsen 4100D Mountain Trail 12:11:41 h180
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 9:45:50 h309
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 12:12:23 h563
2018
14.07 65km JPN9th Nozawa Onsen 4100D Mountain Trail 15:31:08 h204
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 10:09:13 h495
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 10:56:49 h188
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 13:31:25 h149
2017
11.06 100km JPN13th Iwate Ginga 100km Marathon Challenge 11:28:45 h335
23.04 100km JPN27th Fuji 5 Lakes 100 km Challenge 12:36:46 h665