Masanobu (林雅信) Hayashi
ID 527469
Born : 1976 Cat. M50 Ultrarunner since 2007 JPN
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
41
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
27,8%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 5 363; Σ finishers = 19 312. 5 363 / 19 312 × 100 = 27.77%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed23
Km — ultra races2 234 km
> 100 km7
Longest race120,0 km
35th Fuji 5 Lakes Sparta Challenge — 20/4/2025

Km per year (ultra races)

118
1 race
2022
418
4 races
2023
389
4 races
2024
220
2 races
2025
2026

Race types (share of distance)

Road92,7%
Trail7,3%

Records

50 km13h56'33100 km9h08'20

HISTORY

23 race(s)
DateRacePerf.Rk
2025
14.09 100km JPN23th Tango 100 km Ultramarathon 13:17:10 h656
20.04 120km JPN35th Fuji 5 Lakes Sparta Challenge 14:54:38 h414
2024
15.09 100km JPN22th Tango 100 km Ultramarathon 9:57:37 h64
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 9:56:46 h284
09.06 71km JPN12th Hida Takayama 71 km Ultramarathon 6:29:40 h19
21.04 118km JPN34th Fuji 5 Lakes 118 km Challenge 12:18:40 h45
2023
17.09 100km JPN21th Tango 100 km Ultramarathon 9:57:28 h57
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 9:14:07 h133
21.05 100km JPN29th Yatsugatake Nobeyama 100 km 10:51:54 h64
16.04 118km JPN33th Fuji 5 Lakes 118 km Challenge 12:23:50 h53
2022
17.04 118km JPN32th Fuji 5 Lakes 118 km Challenge 12:35:57 h77
2019
21.04 118km JPN29th Fuji 5 Lakes 118 km Challenge 12:06:59 h62
2018
17.06 100km JPN2nd Nikko 100km Ultramarathon 9:08:20 h17
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 12:40:48 h80
2017
02.07 100km JPN1st Nikko 100km Ultramarathon 11:14:32 h188
23.04 118km JPN27th Fuji 5 Lakes 118 km Challenge 14:29:21 h402
2016
16.07 65km JPN7th Nozawa Onsen 4100D Mountain Trail 10:34:27 h73
05.06 100km JPN4th Tokyo Shibamata 100 km 12:07:51 h522
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 12:17:29 h518
2015
30.08 48km JPN2nd Tsukuba Renjyo 48 km Road & Trail Run 6:45:20 h144
19.04 100km JPN25th Fuji 5 Lakes 100 km Challenge 12:48:29 h723
2014
20.04 72km JPN24th Fuji 5 Lakes 72 km Challenge 8:12:45 h96
2007
27.05 50km JPNOSJ Hakone 50K 13:56:33 h695