Tomohiro (水越友洋) Mizukoshi
Born : 1974 Cat. M50 Ultrarunner since 2013 JPN
58
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
60
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
10
Countries visited ?HKGHong KongINAIndonesiaJPNJapanKORSouth KoreaMASMalaysiaPHIPhilippinesSGPSingaporeTHAThailandUSAUnited StatesVIEVietnam
5,3%
Rank quotient ?This runner's calculation uses 84 eligible race(s): Σ(rank − 1) = 1 366; Σ finishers = 25 680. 1 366 / 25 680 × 100 = 5.32%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed84
Km — ultra races6 124 km
> 100 km5
> 160 km4
> 200 km1
Longest race230,0 km

Km per year (ultra races)

461
5 races
2022
440
5 races
2023
484
8 races
2024
263
4 races
2025
190
3 races
2026

Race types (share of distance)

Road6,1%
Trail93,9%

Wins & podiums (ultra)

🏆 Win4
🏆 Win M4
🏅 Top 313
🏅 Top 3 M14
Longest winning streak1
Current streak0

HISTORY

84 race(s)
DateRacePerf.Rk
2026
07.06 60km SGP5th Ultra Trail Singapore 7:16:29 h7
15.05 60km INA4th BTR Ultra 11:38:19 h14
28.02 70km HKG7th The 9 Dragons - ATM 11:54:04 h23
2025
30.08 48km MAS13th The Most Beautiful Thing (TMBT) 50 km Ultra Trail Marathon 7:36:45 h15
27.06 80km JPN4th Deep Japan Ultra 100 - 80 km 13:18:09 h10
29.03 64.5km HKG10th Lantau Trail race 70k 8:50:21 h37
11.01 70km VIE7th Vietnam Trail Marathon 7:30:03 h10
2024
21.12 55km VIE1st Prenn Trail Summit (The Heroes - 55km) 6:21:39 h4
16.11 50km JPN10th FunTrails50K Round 7:03:19 h16
22.09 50km JPN1st OSJ Ontake 50km 4:54:48 h9
14.09 85km MAS12th The Most Beautiful Thing (TMBT) 85 km Ultra Trail Marathon 13:35:21 h25
21.07 66km JPN12th Kirishima Ebino-kougen Extreme Trail 9:44:27 h22
14.07 60km JPN2nd Shin Daisetsuzan Trail Journey 8:45:30 h6
15.06 48km JPN3rd KTF Trail running race - Rockin Bear 5:09:28 h17
20.01 70km VIE6th Vietnam Trail Marathon 9:55:01 h14
2023
03.11 100km MAS6th Malaysia Mountain Trail Festival - 100km 15:36:11 h9
22.09 100km VIE11. Vietnam Mountain Marathon 100km 16:51:33 h6
23.07 60km JPN1st Shin Daisetsuzan Trail Journey 8:32:22 h9
23.06 80km JPN2nd Deep Japan Ultra 100 - 80 km 11:52:03 h6
01.04 100km VIE2nd Cuc Phuong Jungle Paths 19:39:31 h6
2022
17.12 75km PHI7th Mt. APO Sky & Vertical 100 km Race 21:16:43 h37
09.09 106km VIE10. Vietnam Mountain Marathon 100km 17:38:18 h4
16.07 100mi JPN14th OSJ Ontake 100 Mile Ultra Trail 19:18:15 h5
19.06 60km JPN8th Echigo Country Trail 6:36:28 h3 🥉
28.05 59km JPN14th OSJ Okukuji Trail 60k 10:48:10 h54
2021
28.08 75km JPN1st Okushinano 100 - 75 km 9:23:56 h33
23.07 65km JPN12th Nozawa Onsen 4100D Mountain Trail 8:24:46 h29
2020
15.02 100km THA5th Ultra Trail Unseen Koh Chang (UTKC) - The Jungle 100 km 29:34:37 h39
2019
14.12 84km MAS2nd Malaysia Mountain Trail Festival - 84KM Ultra Challenge 13:09:53 h11
08.12 71.7km JPN6th Izu Trail Journey 7:03:23 h25
18.10 230km THA3rd Ultra-Trail Chiang Rai 230 km 46:16:05 h8
20.09 100km VIE7. Vietnam Mountain Marathon 100km 15:58:34 h6
24.08 100km MAS5th The Magnificent Merapoh Trail (TMMT) 100 km 11:48:17 h2 🥈
22.06 100mi MAS5th Ultimate Trails Of Penang Eco 100 miles 27:16:56 h2 🥈
25.05 70km VIE3rd Vietnam Jungle Marathon 70km 9:39:50 h6
07.04 50km MAS3rd Sungai Menyala Forest Trail 5:11:11 h14
2018
09.12 71.7km JPN5th Izu Trail Journey 7:55:08 h21
25.11 50mi PHI8th Clark-Miyamit Falls Trail Ultra (CM50) 10:26:08 h2 🥈
11.11 50km JPN10th Kanna Mountain Run 6:02:55 h1 🏆
28.10 50mi PHI3rd Mapawa Ultra Trail 50 Mile 15:26:21 h4
20.10 73km JPN9th OSJ Hyonosen Mountains Trail Race 9:54:27 h19
06.10 70km INA2nd Plataran X Trail 7:58:47 h1 🏆
09.09 51.4km JPN8th Hakuba Int. Trail Run 5:16:21 h9
02.09 50km JPN11th OSJ Adatara Trail 50K 10:54:53 h44
10.08 100km MAS4th The Magnificent Merapoh Trail (TMMT) 100 km 12:15:37 h2 🥈
24.06 72.7km JPN5. Spatrail - Shima to Kusatsu 7:29:35 h5
17.06 53km JPN4th Echigo Country Trail 5:29:20 h6
02.06 50km JPN10th OSJ Okukuji Trail 50k 8:54:53 h11
12.05 100mi MAS4th Ultimate Trails Of Penang Eco 100 miles 34:49:00 h8
21.04 58km KOR4th Korea 50K 8:16:11 h8
01.04 50km MAS2nd Sungai Menyala Forest Trail 4:41:11 h4
10.02 50km JPN9th OSJ Jungle Trail 50K Amami 4:14:50 h4
2017
10.12 71.7km JPN4th Izu Trail Journey 7:59:55 h18
12.11 50km JPN9th Kanna Mountain Run 5:55:39 h1 🏆
23.09 75km JPN4th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup 10:14:45 h2 🥈
10.09 50km JPN10th OSJ Adatara Trail 50K 9:31:56 h11
15.07 100km JPN10th OSJ Ontake 100km Ultra Trail 9:19:54 h3 🥉
25.06 72.7km JPN4. Spatrail - Shima to Kusatsu 7:37:42 h4
27.05 50km JPN9th OSJ Okukuji Trail 50k 9:26:08 h22
13.05 50mi JPN3rd Mt. Hiei Int. 50 Mile Trail Run 10:40:24 h10
23.04 70km JPN3rd Okumikawa Power Trail 8:36:22 h18
05.03 50km JPN8th OSJ Jungle Trail 50K Amami 4:17:50 h5
2016
11.12 71.7km JPN3rd Izu Trail Journey 7:55:56 h12
13.11 50km JPN8th Kanna Mountain Run 5:57:37 h2 🥈
22.10 60km JPN3rd Shigakogen Extreme Trail 6:43:41 h12
11.09 75km JPN3rd SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup 10:29:42 h5
26.06 72.7km JPN3. Spatrail - Shima to Kusatsu 7:44:25 h6
12.06 45.4km JPN9th Skyline Trail Sugadaira 4:51:02 h12
28.05 50km JPN2nd Mt. Hiei Int. 50 km Trail Run 6:15:07 h18
24.04 70km JPN2nd Okumikawa Power Trail 8:48:14 h21
13.02 50km JPN7th OSJ Jungle Trail 50K Amami 4:29:26 h5
2015
18.10 73km JPN6th OSJ Hyonosen Mountains Trail Race 8:16:45 h8
13.09 53km JPN5th Hakuba Int. Trail Run 9:05:51 h453
02.08 74km JPN1st OSJ Yamanaka Onsen Trail Run 12:27:06 h16
19.07 66km JPN2nd SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup 8:45:18 h4
28.06 72.7km JPN2. Spatrail - Shima to Kusatsu 7:57:04 h7
30.05 50km JPN7th OSJ Okukuji Trail 50k 9:49:23 h30
25.04 50km USA10h Saipan Marathon 3:50:18 h3 🥉
12.04 63km JPN1st Okumikawa Power Trail 8:51:40 h17
08.02 50km JPN6th OSJ Jungle Trail 50K Amami 4:43:54 h7
2014
19.10 100km JPN20th River Shimanto 100km 7:51:08 h12
20.09 66km JPN1st SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup 8:20:58 h9
19.04 50km USA9h Saipan Marathon 3:34:04 h1 🏆
2013
11.05 6h JPNEnteRun 6 hour race Spring 75.900 km4