Masaya (長谷川雅也) Hasegawa
ID 221282
Born : 1980 Cat. M45 Ultrarunner since 2010 JPN
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
56
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
6,1%
Rank quotient ?This runner's calculation uses 50 eligible race(s): Σ(rank − 1) = 2 910; Σ finishers = 47 644. 2 910 / 47 644 × 100 = 6.11%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed50
Km — ultra races5 047 km
> 100 km5
> 160 km1
> 200 km1
Longest race250,0 km
22. Sakura Michi Kokusai Nature Run — 18/4/2015

Km per year (ultra races)

300
3 races
2022
2023
2024
2025
100
1 race
2026

Race types (share of distance)

Road75,4%
Trail24,6%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M2
Longest winning streak0
Current streak0

Records

100 km8h02'03

HISTORY

50 race(s)
DateRacePerf.Rk
2026
14.06 100km JPN14th Hida Takayama 100 km Ultramarathon 10:37:11 h200
2022
18.09 100km JPN20th Tango 100 km Ultramarathon 10:48:49 h78
12.06 100km JPN10th Hida Takayama 100 km Ultramarathon 8:38:37 h9
22.05 100km JPN28th Yatsugatake Nobeyama 100 km 9:19:24 h19
2019
15.09 100km JPN19th Tango 100 km Ultramarathon 9:32:59 h38
09.06 100km JPN8th Hida Takayama 100 km Ultramarathon 9:31:12 h75
02.06 100km JPN2nd Nanto 100 km Ultramarathon 8:34:32 h2 🥈
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 8:54:58 h9
2018
16.09 100km JPN18th Tango 100 km Ultramarathon 10:06:33 h84
25.08 65km JPN21st Mt. Tateyama Climbathon 7:52:58 h18
10.06 100km JPN7th Hida Takayama 100 km Ultramarathon 9:35:23 h58
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 10:05:00 h83
2017
26.08 65km JPN20th Mt. Tateyama Climbathon 8:25:00 h10
11.06 100km JPN6th Hida Takayama 100 km Ultramarathon 8:55:38 h28
21.05 100km JPN23rd Yatsugatake Nobeyama 100 km 9:28:35 h19
2016
09.10 100km JPN11th Echigo Kubikino 100km Ultramarathon 8:40:09 h19
25.09 100km JPN19th Muraoka 100 km Ultra Marathon 10:40:00 h32
18.09 100km JPN16th Tango 100 km Ultramarathon 11:10:10 h219
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 9:13:37 h32
28.05 103km JPN5th Tojinbo 103 km Ultramarathon 9:42:53 h4
22.05 100km JPN22nd Yatsugatake Nobeyama 100 km 10:03:13 h68
24.04 65km JPN18. Okukumano 65 km Ultramarathon 5:51:47 h5
2015
20.09 100km JPN15th Tango 100 km Ultramarathon 8:02:03 h11
07.06 100km JPN4th Hida Takayama 100 km Ultramarathon 8:40:29 h11
06.06 100km JPN25th Aso Caldera Super Marathon 100 km 12:38:58 h597
17.05 100km JPN21st Yatsugatake Nobeyama 100 km 8:28:20 h5
18.04 250km JPN22. Sakura Michi Kokusai Nature Run 34:17:15 h61
29.03 100km JPN1st Osaka Yodogawa 100 km Ultra Marathon 8:07:31 h11
2014
12.10 100km JPN10th Echigo Kubikino 100km Ultramarathon 8:15:35 h15
14.09 100km JPN14th Tango 100 km Ultramarathon 8:34:12 h18
20.07 63km JPN2nd Kirishima Ebino-kougen Extreme Trail 9:53:19 h83
08.06 100km JPN3rd Hida Takayama 100 km Ultramarathon 9:58:16 h74
07.06 100km JPN24th Aso Caldera Super Marathon 100 km 11:06:23 h202
18.05 100km JPN20th Yatsugatake Nobeyama 100 km 8:46:10 h11
2013
29.09 100km JPN1st 100 km Ultramarathon Hakusan-Shirakawago 9:02:30 h12
15.09 100km JPN13th Tango 100 km Ultramarathon 9:13:58 h41
13.07 100km JPN6th OSJ Ontake 100km Ultra Trail 13:38:47 h152
09.06 100km JPN2nd Hida Takayama 100 km Ultramarathon 8:59:54 h16
01.06 100km JPN1st Tokyo Shibamata 100 km 8:55:37 h20
19.05 100km JPN19th Yatsugatake Nobeyama 100 km 9:15:36 h17
21.04 112km JPN23rd Fuji 5 Lakes 112 km Challenge 10:58:09 h15
2012
21.09 100km JPN12th Tango 100 km Ultramarathon 9:31:55 h25
10.06 100km JPN1st Hida Takayama 100 km Ultramarathon 9:02:54 h13
20.05 100km JPN18th Yatsugatake Nobeyama 100 km 9:14:37 h12
22.04 112km JPN22nd Fuji 5 Lakes 112 km Challenge 10:49:33 h39
2011
18.09 100km JPN11th Tango 100 km Ultramarathon 10:13:22 h62
30.04 112km JPN21st Fuji 5 Lakes 112 km Challenge 11:16:23 h52
2010
19.09 100km JPN10th Tango 100 km Ultramarathon 10:02:48 h64
16.05 100km JPN16th Yatsugatake Nobeyama 100 km 11:20:16 h193
25.04 100km JPN12. Okukumano 100 km Ultramarathon 10:32:38 h19