Ryo (大林僚) Obayashi
ID 682996
Born : 1985 Cat. M40 Ultrarunner since 2015 JPN
32
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 ?HKGHong KongJPNJapan
0,7%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 195; Σ finishers = 28 215. 195 / 28 215 × 100 = 0.69%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed32
Km — ultra races2 980 km
> 100 km1
Longest race118,0 km
28th Fuji 5 Lakes 118 km Challenge — 22/4/2018

Km per year (ultra races)

100
1 race
2022
260
3 races
2023
300
3 races
2024
400
4 races
2025
200
2 races
2026

Race types (share of distance)

Road100,0%

Wins & podiums (ultra)

🏆 Win14
🏆 Win M14
🏅 Top 323
🏅 Top 3 M23
Longest winning streak7
Current streak0

Records

50 km3h06'34100 km6h48'59

HISTORY

32 race(s)
DateRacePerf.Rk
2026
14.06 100km JPN14th Hida Takayama 100 km Ultramarathon 7:38:45 h3 🥉
24.01 100km JPN36th Miyako 100 km Ultramarathon 7:08:56 h2 🥈
2025
19.10 100km JPN31th River Shimanto 100km 7:19:36 h2 🥈
08.06 100km JPN13th Hida Takayama 100 km Ultramarathon 7:44:48 h4
13.04 100km JPN4th Atsumi Peninsula Ultra Nature Run - 100km 9:27:37 h2 🥈
26.01 100km JPN35th Miyako 100 km Ultramarathon 7:03:34 h2 🥈
2024
20.10 100km JPN30th River Shimanto 100km 7:09:09 h1 🏆
09.06 100km JPN12th Hida Takayama 100 km Ultramarathon 9:40:56 h95
21.01 100km JPN34th Miyako 100 km Ultramarathon 6:52:57 h1 🏆
2023
15.10 60km JPN29th River Shimanto 60km 3:51:03 h1 🏆
15.04 100km JPN2nd Atsumi Peninsula Ultra Nature Run - 100km 7:09:19 h1 🏆
22.01 100km JPN33th Miyako 100 km Ultramarathon 6:59:12 h1 🏆
2022
15.10 100km JPN5th Iki 100 km Ultra Marathon 7:49:12 h1 🏆
2020
11.10 100km JPN24th 100 km Ultramarathon Ako Seaside Park 7:42:53 h1 🏆
19.01 100km JPN30th Miyako 100 km Ultramarathon 7:05:18 h1 🏆
2019
20.10 100km JPN25th River Shimanto 100km 7:24:23 h6
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 7:49:49 h26
20.01 100km JPN29th Miyako 100 km Ultramarathon 7:11:31 h1 🏆
2018
10.11 50km JPN13th Jingu Gaien Ultramarathon 50 km 3:40:43 h6
21.10 100km JPN24th River Shimanto 100km 6:52:16 h1 🏆
16.09 60km JPN18th Tango 60 km Ultramarathon 4:11:59 h4
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 6:48:59 h10
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 8:51:34 h2 🥈
21.01 100km JPN28th Miyako 100 km Ultramarathon 7:00:23 h1 🏆
2017
15.10 100km JPN23rd River Shimanto 100km 6:55:31 h2 🥈
2016
17.12 50km JPN11th Jingu Gaien Ultramarathon 50 km 3:06:34 h2 🥈
16.10 100km JPN22nd River Shimanto 100km 6:55:48 h1 🏆
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 7:09:45 h21
24.04 71km JPN26th Fuji 5 Lakes 71 km Challenge 4:51:25 h1 🏆
2015
25.09 100km HKG100 km Hong Kong Ultra Marathon 8:51:17 h3 🥉
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 7:27:40 h21
19.04 71km JPN25th Fuji 5 Lakes 71 km Challenge 4:47:22 h1 🏆