Takanori (新井孝典) Arai
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Ultrarunner since 2014
10
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 ?Japan
Japan22,4%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 696; Σ finishers = 7 559. 1 696 / 7 559 × 100 = 22.44%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races977 km
> 100 km3
Longest race118,0 km
28th Fuji 5 Lakes 118 km Challenge — 22/4/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road94,5%
Stage5,5%
Records
HISTORY
11 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2023 | ||||
| 19.03 | 54.2km | 11th Arakawa Riverside Journey Stage Race - Stage 2 |
7:16:02 h | 47 |
| 2022 | ||||
| 17.04 | 62km | 32th Fuji 5 Lakes 62 km Challenge |
6:39:03 h | 78 |
| 2019 | ||||
| 17.08 | 101km | 7th World Cultural Heritage "Fuji" Foot Race |
12:56:26 h | 33 |
| 21.04 | 100km | 29th Fuji 5 Lakes 100 km Challenge |
11:21:43 h | 343 |
| 23.02 | 91km | 9th Little Edo 91km |
10:40:15 h | 14 |
| 2018 | ||||
| 22.04 | 118km | 28th Fuji 5 Lakes 118 km Challenge |
14:15:09 h | 258 |
| 03.03 | 113km | 8th Oedo Night run 113k |
15:43:07 h | 27 |
| 2017 | ||||
| 02.07 | 100km | 1st Nikko 100km Ultramarathon |
10:33:49 h | 114 |
| 04.06 | 78km | 24. Ultramarathon Okumusashi |
8:47:47 h | 410 |
| 2016 | ||||
| 09.10 | 100km | 11th Echigo Kubikino 100km Ultramarathon |
10:58:49 h | 295 |
| 2014 | ||||
| 12.10 | 60km | 10th Echigo Kubikino 60km Ultramarathon |
6:54:52 h | 134 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/4/2018 | 28th Fuji 5 Lakes 118 km Challenge | 118,00 | ×4 |
| ✓ 2 | 3/3/2018 | 8th Oedo Night run 113k | 113,00 | ×4 |
| ✓ 3 | 17/8/2019 | 7th World Cultural Heritage "Fuji" Foot Race | 101,00 | ×3 |
| ✓ 4 | 21/4/2019 | 29th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 5 | 2/7/2017 | 1st Nikko 100km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 9/10/2016 | 11th Echigo Kubikino 100km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 23/2/2019 | 9th Little Edo 91km | 91,00 | ×3 |
| ✓ 8 | 4/6/2017 | 24. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 9 | 17/4/2022 | 32th Fuji 5 Lakes 62 km Challenge | 62,00 | ×2 |
| ✓ 10 | 12/10/2014 | 10th Echigo Kubikino 60km Ultramarathon | 60,00 | ×2 |