Masashi (堀口正志) Horiguchi
ID 845249
Ultrarunner since 2016 JPN
19
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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
54,6%
Rank quotient ?This runner's calculation uses 19 eligible race(s): Σ(rank − 1) = 5 204; Σ finishers = 9 532. 5 204 / 9 532 × 100 = 54.60%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed23
Km — ultra races1 887 km
> 100 km6
> 160 km1
Longest race175,0 km
4th Reiheishi Michi Kyoto to Nikko - 175 km — 26/4/2025

Km per year (ultra races)

150
1 race
2022
130
1 race
2023
310
2 races
2024
355
3 races
2025
200
2 races
2026

Race types (share of distance)

Road73,9%
Stage26,1%

Records

50 km5h55'08100 km13h59'2250 mi10h55'51

HISTORY

21 race(s) · 4 stage(s) nested
DateRacePerf.Rk
2026
28.02–01.03 150km/2stages JPN3rd Modern Japanese Silk Road Journey Run 25:03:51 h85
24.01 50km JPN36th Miyako 50 km Ultramarathon 6:16:11 h96
2025
01–02.11 130km/2stages JPN3rd Mito Kaido Journey run 20:21:19 h48
26.04 175km JPN4th Reiheishi Michi Kyoto to Nikko - 175 km 2d 07:55:49 h15
26.01 50km JPN35th Miyako 50 km Ultramarathon 5:56:39 h55
2024
02.11 128km JPN5th Tokyo Great Race 22:17:20 h16
30.03 78km JPN1st Modern Japanese Silk Road Journey Run - Stage 1 11:28:31 h58
17.03 54.2km JPN12th Arakawa Riverside Journey Stage Race - Stage 2 8:29:47 h97
21.01 50km JPN34th Miyako 50 km Ultramarathon 5:55:08 h44
2023
18.11 130km JPN1st Mito Kaido Journey run 21:42:46 h67
2022
15.10 150km JPN1st Yagurazawa Round Trip Pre-Tournament 30:25:07 h65
2021
03.10 64km JPN8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K 9:26:07 h87
04.04 56km JPN9th Arakawa Riverside Journey - 56 km 8:00:00 h32
2020
21.03 80km JPN8th Arakawa Riverside Journey - 80 km 10:55:51 h18
2019
29.06 8h JPN25th 8-Hour Endurance Race Tokorozawa 58.800 km168
02.06 78km JPN26. Ultramarathon Okumusashi 9:53:55 h831
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 13:59:22 h1425
2018
03.06 78km JPN25. Ultramarathon Okumusashi 9:28:53 h492
2017
04.06 78km JPN24. Ultramarathon Okumusashi 9:24:18 h613
23.04 71km JPN27th Fuji 5 Lakes 71 km Challenge 8:32:46 h268
2016
05.06 78km JPN23. Ultramarathon Okumusashi 9:49:17 h798