Tsutomu (中原力) Nakahara
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Born : 1964
Cat. M60 Ultrarunner since 2006
13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
29
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
Japan82,1%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 5 400; Σ finishers = 6 574. 5 400 / 6 574 × 100 = 82.14%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races1 053 km
> 100 km1
Longest race108,0 km
24th Fuji 5 Lakes 108 km Challenge — 20/4/2014
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road76,5%
Trail23,5%
Records
HISTORY
13 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2022 | ||||
| 22.05 | 71km | 28th Yatsugatake Nobeyama 71 km |
9:56:15 h | 214 |
| 2019 | ||||
| 25.05 | 50km | 5th Mt. Hiei Int. 50 km Trail Run |
10:14:10 h | 212 |
| 2018 | ||||
| 12.05 | 50km | 4th Mt. Hiei Int. 50 km Trail Run |
10:04:40 h | 368 |
| 2015 | ||||
| 26.09 | 76.7km | 4th Shizuoka to Yamanashi |
18:18:40 h | 534 |
| 2014 | ||||
| 20.04 | 108km | 24th Fuji 5 Lakes 108 km Challenge |
14:29:23 h | 646 |
| 2013 | ||||
| 29.09 | 88km | 16th Muraoka 88 km Ultra Marathon |
12:48:31 h | 84 |
| 09.06 | 72km | 2nd Hida Takayama 72 km Ultramarathon |
10:45:29 h | 372 |
| 2012 | ||||
| 28.10 | 71km | 3rd OSJ Hyonosen Mountains Trail Race |
13:46:16 h | 140 |
| 30.09 | 66km | 15th Muraoka 66 km Ultra Marathon |
9:28:10 h | 112 |
| 2011 | ||||
| 19.06 | 100km | 6. Okinoshima 100km Ultra Marathon |
13:45:03 h | 222 |
| 2009 | ||||
| 26.04 | 100km | 19th Fuji 5 Lakes 100 km Challenge |
13:51:27 h | 568 |
| 2008 | ||||
| 19.10 | 100km | 14th River Shimanto 100km |
13:56:31 h | 983 |
| 2006 | ||||
| 15.10 | 100km | 12th River Shimanto 100km |
13:48:00 h | 958 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 20/4/2014 | 24th Fuji 5 Lakes 108 km Challenge | 108,00 | ×3 |
| ✓ 2 | 19/6/2011 | 6. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 3 | 26/4/2009 | 19th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 4 | 19/10/2008 | 14th River Shimanto 100km | 100,00 | ×3 |
| ✓ 5 | 15/10/2006 | 12th River Shimanto 100km | 100,00 | ×3 |
| ✓ 6 | 29/9/2013 | 16th Muraoka 88 km Ultra Marathon | 88,00 | ×3 |
| ✓ 7 | 26/9/2015 | 4th Shizuoka to Yamanashi (STY) | 76,70 | ×2 |
| ✓ 8 | 9/6/2013 | 2nd Hida Takayama 72 km Ultramarathon | 72,00 | ×2 |
| ✓ 9 | 22/5/2022 | 28th Yatsugatake Nobeyama 71 km | 71,00 | ×2 |
| ✓ 10 | 28/10/2012 | 3rd OSJ Hyonosen Mountains Trail Race | 71,00 | ×2 |
| ✓ 11 | 30/9/2012 | 15th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 12 | 25/5/2019 | 5th Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |
| ✓ 13 | 12/5/2018 | 4th Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |