Bungo (大槻文悟) Otsuki
ID 460977
Born : 1972 Cat. M50 Ultrarunner since 2013 JPN
41
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
1
Countries visited ?JPNJapan
3,3%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 530; Σ finishers = 15 998. 530 / 15 998 × 100 = 3.31%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races3 483 km
> 100 km9
> 160 km3
Longest race169,0 km
5th Lake Biwa 100 — 10/10/2025

Km per year (ultra races)

434
5 races
2022
212
3 races
2023
304
3 races
2024
169
1 race
2025
77
1 race
2026

Race types (share of distance)

Road24,6%
Trail75,4%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 38
🏅 Top 3 M8
Longest winning streak0
Current streak0

Records

50 km3h51'44100 km8h32'1450 mi10h26'38100 mi18h44'16

HISTORY

41 race(s)
DateRacePerf.Rk
2026
17.05 77km JPN31th Saba Highway Ultramarathon 7:11:29 h3 🥉
2025
10.10 169km JPN5th Lake Biwa 100 37:53:11 h62
2024
14.09 163.1km JPN16th Shinetsu Five Mountains Trail 100 mile 25:28:12 h50
19.05 77km JPN29th Saba Highway Ultramarathon 7:18:02 h4
24.03 64km JPN10th OSJ Shinshiro Trail 64K 10:37:27 h14
2023
22.10 51km JPN1st Great Ryozen Mountain 5:57:37 h8
17.09 110km JPN15th Shinetsu Five Mountains Trail 110km 14:20:03 h11
09.04 51.4km JPN1st AYABE Trailrun 5:15:02 h6
2022
18.09 109km JPN14th Shinetsu Five Mountains Trail 110km 13:01:16 h2 🥈
21.08 60km JPN11th World Geopark Trail Run in Sanin Kaigan 5:43:54 h2 🥈
19.06 100km JPN15. Okinoshima 100km Ultra Marathon 8:32:14 h3 🥉
11.06 100.8km JPN2nd Okushinano 100 11:04:59 h5
26.03 64km JPN8th OSJ Shinshiro Trail 64K 10:03:33 h6
2021
28.11 50km JPN1st TAMBA 100 Adventure Trail - 50km 9:51:02 h4
2020
23.08 60km JPN9th World Geopark Trail Run in Sanin Kaigan 6:48:05 h2 🥈
2019
30.06 60km JPN6th Fairy Trail - Super Long 8:42:51 h17
2018
20.10 73km JPN9th OSJ Hyonosen Mountains Trail Race 9:08:43 h7
07.10 71.5km JPN26th Hasetsune Cup - Japan Mountain Endurance Race 10:33:17 h39
17.06 50km JPN13. Okinoshima 50km Ultra Marathon 3:51:44 h4
24.03 64km JPN4th OSJ Shinshiro Trail 64K 10:02:18 h3 🥉
2017
01.10 74.5km JPN2nd Shinjo-Hiruzen Super Trail 8:54:50 h3 🥉
15.07 100mi JPN10th OSJ Ontake 100 Mile Ultra Trail 18:44:16 h7
10.06 45km JPN10th Skyline Trail Sugadaira 5:42:25 h31
13.05 50mi JPN3rd Mt. Hiei Int. 50 Mile Trail Run 10:26:38 h9
23.04 70km JPN3rd Okumikawa Power Trail 8:25:00 h13
19.03 64km JPN3rd OSJ Shinshiro Trail 64K 10:02:54 h7
2016
13.11 75km JPN2nd Gasando Trail running race 8:31:39 h7
11.09 129km JPN3rd SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 19:20:46 h3 🥉
16.07 100km JPN9th OSJ Ontake 100km Ultra Trail 9:40:56 h5
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 9:09:41 h30
28.05 50km JPN2nd Mt. Hiei Int. 50 km Trail Run 6:18:51 h19
2015
18.10 73km JPN6th OSJ Hyonosen Mountains Trail Race 8:16:17 h7
19.07 118km JPN2nd SkyView Ultra-Trail - Yamada Noboru Memorial Cup 19:27:10 h7
07.06 100km JPN4th Hida Takayama 100 km Ultramarathon 9:22:15 h36
17.05 77km JPNSaba Highway Ultramarathon 6:55:56 h4
2014
19.10 73km JPN5th OSJ Hyonosen Mountains Trail Race 8:59:22 h14
20.09 120km JPN1st SkyView Ultra-Trail - Yamada Noboru Memorial Cup 20:48:42 h31
08.06 100km JPN3rd Hida Takayama 100 km Ultramarathon 9:40:54 h52
18.05 77km JPNSaba Highway Ultramarathon 7:05:50 h9
2013
20.10 71km JPN4th OSJ Hyonosen Mountains Trail Race 9:19:43 h12
29.09 100km JPN16th Muraoka 100 km Ultra Marathon 10:08:22 h13