Masaki (津幡正樹) Tsuha
ID 289651
Born : 1970 Cat. M55 Ultrarunner since 2005 JPN
22
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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
77,7%
Rank quotient ?This runner's calculation uses 22 eligible race(s): Σ(rank − 1) = 26 880; Σ finishers = 34 607. 26 880 / 34 607 × 100 = 77.67%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed22
Km — ultra races2 201 km
> 100 km1
Longest race101,0 km
12th World Cultural Heritage "Fuji" Foot Race — 22/8/2025

Km per year (ultra races)

200
2 races
2022
200
2 races
2023
200
2 races
2024
401
4 races
2025
100
1 race
2026

Race types (share of distance)

Road100,0%

Records

100 km10h37'28

HISTORY

22 race(s)
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 12:59:29 h2598
2025
05.10 100km JPN6th Mine Akiyoshidai Geopark Ultra Marathon 13:59:04 h96
22.08 101km JPN12th World Cultural Heritage "Fuji" Foot Race 15:47:39 h140
29.06 100km JPN40. Lake Saroma 100 km Ultramarathon 12:32:54 h1336
02.02 100km JPN4th Amami yori yori Run 14:43:45 h38
2024
13.10 100km JPN15th Echigo Kubikino 100km Ultramarathon 12:56:46 h487
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 12:58:10 h1763
2023
15.10 100km JPN29th River Shimanto 100km 13:58:17 h1065
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 12:48:01 h1634
2022
18.12 100km JPN5th Okinawa 100km Ultramarathon 13:59:59 h468
22.05 100km JPN10th Tokyo Shibamata 100 km 12:45:06 h372
2019
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 10:37:28 h589
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 11:06:28 h855
2017
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 12:59:23 h2302
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 12:15:25 h1728
2015
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 12:58:47 h2700
2014
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 12:46:30 h1444
2013
11.08 100km JPN3rd North Okhotsk 100 km Marathon 13:57:39 h326
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 12:35:14 h1612
2012
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 12:20:19 h1570
2011
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 12:59:47 h2162
2005
26.06 100km JPNOpen Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) 12:52:14 h1617