Seiji (久岡誠治) Hisaoka
ID 974530
Born : 1962 Cat. M60 Ultrarunner since 2017 JPN
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
64,2%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 4 728; Σ finishers = 7 369. 4 728 / 7 369 × 100 = 64.16%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed27
Km — ultra races2 199 km
> 100 km7
Longest race159,0 km
7th Nikko Sennin Concentric Highway Journey Run — 6/6/2026

Km per year (ultra races)

199
3 races
2022
314
3 races
2023
419
4 races
2024
378
3 races
2025
369
3 races
2026

Race types (share of distance)

Road77,2%
Stage22,8%

Records

100 km12h39'2150 mi11h23'00100 mi30h58'50

HISTORY

24 race(s) · 6 stage(s) nested
DateRacePerf.Rk
2026
06.06 159km JPN7th Nikko Sennin Concentric Highway Journey Run 31:14:47 h121
11.04 8h JPN21st Toda Saiko 8 Hours 60.000 km67
28.02–01.03 150km/2stages JPN3rd Modern Japanese Silk Road Journey Run 23:11:22 h63
2025
19.10 70km JPN32. Ultramarathon Okumusashi 9:50:06 h380
07.06 159km JPN6th Nikko Sennin Concentric Highway Journey Run 30:58:50 h81
29–30.03 149km/2stages JPN2nd Modern Japanese Silk Road Journey Run 23:27:20 h61
2024
16.11 130km JPN2nd Mito Kaido Journey run 23:18:14 h78
20.10 70km JPN31. Ultramarathon Okumusashi 10:13:36 h566
13.04 71km JPN19th Toda Saiko 70 km 8:46:43 h141
30–31.03 148km/2stages JPN1st Modern Japanese Silk Road Journey Run 23:32:09 h42
2023
18.11 130km JPN1st Mito Kaido Journey run 22:47:47 h91
01.07 8h JPN29th 8-Hour Endurance Race Tokorozawa 58.800 km69
08.04 71km JPN18th Toda Saiko 70 km 7:52:13 h110
19.03 54.2km JPN11th Arakawa Riverside Journey Stage Race - Stage 2 6:40:59 h28
2022
20.11 63km JPN1. Minuma Challenge 60 7:44:48 h36
03.07 8h JPN28th 8-Hour Endurance Race Tokorozawa 53.900 km167
21.03 81.6km JPN10th Arakawa Riverside Journey - 81.6 km 11:23:00 h26
2021
14.11 63km JPN0. Minuma Challenge 60 7:57:36 h50
04.07 8h JPN27th 8-Hour Endurance Race Tokorozawa 63.700 km220
10.04 70km JPN16th Toda Saiko 70 km 7:59:40 h297
2020
05.07 8h JPN26th 8-Hour Endurance Race Tokorozawa 63.700 km96
2019
19.05 100km JPN7th Tokyo Shibamata 100 km 12:39:21 h789
2018
03.06 100km JPN6th Tokyo Shibamata 100 km 13:48:48 h955
2017
04.06 60km JPN5th Tokyo Shibamata 60 km 6:47:32 h245