Tsubasa (東翼) Azuma
ID 1307435
Born : 1988 Cat. M35 Ultrarunner since 2019 JPN
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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
0,9%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 95; Σ finishers = 10 025. 95 / 10 025 × 100 = 0.95%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed14
Km — ultra races1 029 km
> 100 km2
> 160 km1
Longest race167,0 km
11th Ultra-Trail Mt. Fuji (UTMF) — 24/4/2026

Km per year (ultra races)

200
3 races
2022
182
2 races
2023
120
2 races
2024
190
3 races
2025
289
3 races
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 36
🏅 Top 3 M6
Longest winning streak1
Current streak0

Records

50 km6h24'4250 mi9h01'15

HISTORY

14 race(s)
DateRacePerf.Rk
2026
20.06 58km JPN2nd Kaga Spa by UTMB - Kaga Spa Trail Endurance 50 5:58:01 h5
24.04 167km JPN11th Ultra-Trail Mt. Fuji 22:13:55 h15
22.03 64km JPN12th OSJ Shinshiro Trail 64K 9:26:54 h2 🥈
2025
02.11 48km JPN7th Ninja Trail Run 4:52:24 h1 🏆
12.10 71.5km JPN33th Hasetsune Cup - Japan Mountain Endurance Race 9:57:26 h22
26.04 70km JPN4th KAI 70k 7:54:13 h8
2024
03.11 48km JPN6th Ninja Trail Run 5:07:00 h3 🥉
13.10 71.5km JPN32th Hasetsune Cup - Japan Mountain Endurance Race 8:35:56 h17
2023
08.10 71.5km JPN31th Hasetsune Cup - Japan Mountain Endurance Race 8:27:10 h12
17.09 110km JPN15th Shinetsu Five Mountains Trail 110km 13:36:19 h3 🥉
2022
06.11 48km JPN4th Ninja Trail Run 5:05:43 h1 🏆
09.10 71.5km JPN30th Hasetsune Cup - Japan Mountain Endurance Race 8:41:13 h13
21.05 50mi JPN8th Mt. Hiei Int. 50 Mile Trail Run 9:01:15 h4
2019
25.05 50km JPN5th Mt. Hiei Int. 50 km Trail Run 6:24:42 h3 🥉