Junichi (田中淳一) Tanaka
Born : 1973 Cat. M50 Ultrarunner since 2014 JPN
24
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
39
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
14,5%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 1 346; Σ finishers = 9 308. 1 346 / 9 308 × 100 = 14.46%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 131 km
> 100 km5
> 160 km1
Longest race160,9 km

Km per year (ultra races)

493
5 races
2022
233
3 races
2023
156
2 races
2024
127
2 races
2025
100
1 race
2026

Race types (share of distance)

Road61,3%
Trail38,7%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0

HISTORY

25 race(s)
DateRacePerf.Rk
2026
19.04 100km JPN26. Okukumano 100 km Ultramarathon 10:01:46 h33
2025
18.05 77km JPN30th Saba Highway Ultramarathon 8:24:48 h34
23.03 50km JPN32th Mt. Rocco Cannonball Run - 50 km Speed 6:34:19 h7
2024
21.04 100km JPN15th 100 km Ultra Maranic Osaka 8:27:22 h3 🥉
31.03 56km JPN30th Mt. Rocco Cannonball Run - 56 km Speed 6:25:41 h9
2023
22.10 56km JPN29th Mt. Rocco Cannonball Run - 56 km Speed 6:38:05 h7
24.09 100km JPN26th Muraoka 100 km Ultra Marathon 10:30:58 h24
21.05 77km JPN28th Saba Highway Ultramarathon 8:14:37 h26
2022
18.09 60km JPN20th Tango 60 km Ultramarathon 9:06:28 h247
18.09 100km JPN20th Tango 100 km Ultramarathon 9:49:45 h31
16.07 100mi JPN14th OSJ Ontake 100 Mile Ultra Trail 21:59:34 h30
19.06 60km JPN9th Fairy Trail - Super Long 9:34:19 h14
19.03 112km JPN26th Mt. Rocco Cannonball Run - 112 km Stairway To Heaven 16:49:39 h1 🏆
2019
29.09 100km JPN22th Muraoka 100 km Ultra Marathon 11:46:32 h103
13.07 100km JPN12th OSJ Ontake 100km Ultra Trail 11:44:39 h39
2018
27.05 65km JPN3rd Osorakan-Trail 10:47:37 h51
2017
21.10 112km JPN17th Mt. Rocco Cannonball Run - 112 km Power 15:14:00 h13
13.05 50km JPN3rd Mt. Hiei Int. 50 km Trail Run 7:48:59 h66
2016
18.09 100km JPN16th Tango 100 km Ultramarathon 10:26:02 h123
28.05 50km JPN2nd Mt. Hiei Int. 50 km Trail Run 7:46:52 h128
2015
17.10 112km JPN13th Mt. Rocco Cannonball Run - 112 km Power 16:38:00 h19
27.09 100km JPN18th Muraoka 100 km Ultra Marathon 11:27:15 h68
19.07 65km JPN6th Nozawa Onsen 4100D Mountain Trail 11:28:02 h99
2014
25.10 112km JPN11th Mt. Rocco Cannonball Run - 112 km Power 15:45:00 h12
30.03 56km JPN10th Mt. Rocco Cannonball Run - 56 km Speed 9:44:25 h184