Ryutaro (藤井竜太郎) Fujii
Born : 1964 Cat. M60 Ultrarunner since 2013 JPN
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
47
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
3
Countries visited ?FRAFranceITAItalyJPNJapan
62,9%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 12 985; Σ finishers = 20 645. 12 985 / 20 645 × 100 = 62.90%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 712 km
> 100 km11
> 160 km6
> 200 km1
Longest race250,0 km

Km per year (ultra races)

309
3 races
2022
535
4 races
2023
2024
250
1 race
2025
100
1 race
2026

Race types (share of distance)

Road5,7%
Trail94,3%

HISTORY

25 race(s)
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 12:08:15 h1577
2025
21.03 250km JPN1st Izuichi Great Race 250km 2d 02:28:45 h31
2023
06.10 169km JPN3rd Lake Biwa 100 2d 03:23:39 h242
29.08 145km ITA13ème Sur les Traces des Ducs de Savoie 42:54:14 h898
04.06 53.7km JPN21th Rishiri Island Ultra Marathon 6:18:33 h95
21.04 167km JPN8th Ultra-Trail Mt. Fuji 40:48:13 h1058
2022
11.12 70km JPN9th Izu Trail Journey 11:44:23 h728
07.10 169km JPN2nd Lake Biwa 100 2d 01:40:41 h148
25.06 70km JPN1st Deep Japan Ultra 100 - 70 km 19:17:36 h17
2021
23.04 100mi JPN1st Mt. Fuji 100 Mile Challenge 41:16:32 h27
2019
08.12 71.7km JPN6th Izu Trail Journey 10:44:45 h608
23.06 72.6km JPN6. Spatrail - Shima to Kusatsu 72K 12:54:06 h541
2018
09.12 71.7km JPN5th Izu Trail Journey 13:24:55 h1066
24.06 72.7km JPN5. Spatrail - Shima to Kusatsu 12:57:43 h507
12.05 108.7km JPN2nd Aso Round Trail 27:36:52 h312
2017
17.12 68km JPNCoast to Coast 70k Trail Run 10:49:28 h265
01.09 167.7km FRA15ème Ultra Trail Tour du Mont Blanc 44:24:31 h1409
25.06 72.7km JPN4. Spatrail - Shima to Kusatsu 12:15:30 h511
20.05 106km JPN2nd Trainic World 100 km in Sai-No-Kuni 30:03:33 h209
2016
11.09 129km JPN3rd SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 33:26:24 h325
2015
21.10 56km JPN1st FunTrails50K Two Lakes&Green line 9:54:14 h151
28.08 101km ITA10ème Courmayeur-Champex-Chamonix 23:46:50 h890
18.07 100km JPN8th OSJ Ontake 100km Ultra Trail 15:28:20 h360
2014
26.04 88km JPN3rd Shizuoka to Yamanashi 19:18:17 h206
2013
13.10 71.5km JPN21st Hasetsune Cup - Japan Mountain Endurance Race 15:28:28 h829