Akihiro (田中章弘) Tanaka
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Born : 1972
Cat. M50 Ultrarunner since 2009
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
32
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 ?Japan
Japan39,8%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 2 884; Σ finishers = 7 254. 2 884 / 7 254 × 100 = 39.76%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 154 km
> 100 km1
Longest race140,0 km
21. Yamaguchi 100 Hagi-O-Kan Maranic 140 km — 3/5/2009
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road93,9%
Trail6,1%
Records
HISTORY
15 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 19.10 | 100km | 31th River Shimanto 100km |
11:47:47 h | 351 |
| 28.09 | 100km | 28th Muraoka 100 km Ultra Marathon |
12:56:07 h | 238 |
| 2024 | ||||
| 29.09 | 88km | 27th Muraoka 88 km Ultra Marathon |
10:51:44 h | 23 |
| 2023 | ||||
| 24.09 | 66km | 26th Muraoka 66 km Ultra Marathon |
8:37:13 h | 68 |
| 2022 | ||||
| 29.09 | 45km | 25th Muraoka 45 km Ultra Marathon |
5:29:45 h | 426 |
| 2019 | ||||
| 29.09 | 66km | 22th Muraoka 66 km Ultra Marathon |
9:39:38 h | 120 |
| 2017 | ||||
| 24.09 | 66km | 20th Muraoka 66 km Ultra Marathon |
7:18:14 h | 19 |
| 2015 | ||||
| 27.09 | 66km | 18th Muraoka 66 km Ultra Marathon |
7:43:27 h | 24 |
| 07.06 | 55km | 15th Rishiri Island Ultra Marathon |
6:09:32 h | 174 |
| 2014 | ||||
| 28.09 | 66km | 17th Muraoka 66 km Ultra Marathon |
7:43:00 h | 37 |
| 03.05 | 70km | 22. Mukogawa Yurikamome Ultra Marathon |
8:22:17 h | 455 |
| 2013 | ||||
| 29.09 | 66km | 16th Muraoka 66 km Ultra Marathon |
7:44:57 h | 46 |
| 2009 | ||||
| 18.10 | 100km | 15th River Shimanto 100km |
12:32:37 h | 607 |
| 20.09 | 60km | 9th Tango 60 km Ultramarathon |
6:34:40 h | 106 |
| 03.05 | 140km | 21. Yamaguchi 100 Hagi-O-Kan Maranic 140 km |
22:41:52 h | 205 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 3/5/2009 | 21. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×4 |
| ✓ 2 | 19/10/2025 | 31th River Shimanto 100km | 100,00 | ×3 |
| ✓ 3 | 28/9/2025 | 28th Muraoka 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 18/10/2009 | 15th River Shimanto 100km | 100,00 | ×3 |
| ✓ 5 | 29/9/2024 | 27th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 6 | 3/5/2014 | 22. Mukogawa Yurikamome Ultra Marathon | 70,00 | ×2 |
| ✓ 7 | 24/9/2023 | 26th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 8 | 29/9/2019 | 22th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 9 | 24/9/2017 | 20th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 10 | 27/9/2015 | 18th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 11 | 28/9/2014 | 17th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 12 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 13 | 20/9/2009 | 9th Tango 60 km Ultramarathon | 60,00 | ×1 |
| ✓ 14 | 7/6/2015 | 15th Rishiri Island Ultra Marathon | 55,00 | ×1 |
| ✓ 15 | 29/9/2022 | 25th Muraoka 45 km Ultra Marathon | 45,00 | ×1 |