Masaki (得永正樹) Tokunaga
Born : 1958 Cat. M65 Ultrarunner since 2014 JPN
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
35
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
50,6%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 5 381; Σ finishers = 10 641. 5 381 / 10 641 × 100 = 50.57%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races1 672 km
Longest race100,0 km

Km per year (ultra races)

200
4 races
2022
305
4 races
2023
62
1 race
2024
53
1 race
2025
51
1 race
2026

Race types (share of distance)

Road68,4%
Trail25,6%
Ult.Walk6,0%

HISTORY

25 race(s)
DateRacePerf.Rk
2026
20.06 12h JPN5th Oizumi Ryokuchi Park 12h 50.600 km15
2025
21.06 12h JPN4th Oizumi Ryokuchi Park 12h 52.800 km17
2024
15.06 12h JPN3rd Oizumi Ryokuchi Park 12h 61.600 km16
2023
14.10 100km JPN9th Lake Biwa Charity 100km Walking Tournament 18:48:24 h34
10.06 12h JPN2nd Oizumi Ryokuchi Park 12h 52.800 km13
03.05 100km JPN5th Sunny Okayama 100km 18:13:26 h51
08.04 52km JPN6th Lake Biwa Kaizu Sakura Maranic - 52 km 7:15:00 h30
2022
29.09 45km JPN25th Muraoka 45 km Ultra Marathon 7:04:16 h813
10.09 12h JPN1st Oizumi Ryokuchi Park 12h 50.600 km16
28.05 52km JPN10th Tojinbo 52 km Ultramarathon 7:42:53 h82
09.04 52km JPN5th Lake Biwa Kaizu Sakura Maranic - 52 km 9:44:00 h29
2021
11.04 52km JPN4th Lake Biwa Kaizu Sakura Maranic - 52 km 6:19:00 h5
2019
02.06 100km JPN2nd Nanto 100 km Ultramarathon 14:46:27 h299
2018
09.12 71.7km JPN5th Izu Trail Journey 12:17:23 h687
03.06 100km JPN1st Nanto 100 km Ultramarathon 15:55:33 h164
28.04 92km JPN5th Shizuoka to Yamanashi 18:30:13 h309
2017
08.10 71.5km JPN25th Hasetsune Cup - Japan Mountain Endurance Race 16:32:32 h781
03.05 70km JPN25. Mukogawa Yurikamome Ultra Marathon 7:40:37 h318
2016
11.12 71.7km JPN3rd Izu Trail Journey 13:18:45 h946
19.11 52km JPN2nd FunTrails50K Two Lakes&Green line 9:21:35 h185
11.09 50km JPN1st Koyasan and Ryujin-Onsen 50 km Ultra Marathon 6:20:28 h279
27.03 70km JPN2nd Osaka Yodogawa 70 km Ultra Marathon 7:23:13 h41
2015
27.09 66km JPN18th Muraoka 66 km Ultra Marathon 8:54:05 h91
29.03 70km JPN1st Osaka Yodogawa 70 km Ultra Marathon 7:21:12 h65
2014
28.09 66km JPN17th Muraoka 66 km Ultra Marathon 9:00:41 h120