Teppei (相原鉄平) Aihara
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Born : 1977
Cat. M45 Ultrarunner since 2014
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
Japan16,1%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 2 041; Σ finishers = 12 716. 2 041 / 12 716 × 100 = 16.05%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed20
Km — ultra races1 990 km
> 100 km7
> 160 km1
> 200 km1
Longest race210,0 km
1st Donan Story Journey Run — 23/8/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road81,9%
Stage18,1%
HISTORY
18 race(s) · 4 stage(s) nested| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 23/8/2024 | 1st Donan Story Journey Run | 210,00 | ×5 |
| ✓ 2 | 6/4/2024 | 3rd Yagurazawa Round Trip Pre-Tournament | 160,00 | ×4 |
| ✓ 3 | 29/3/2025 | 2nd Modern Japanese Silk Road Journey Run | 149,00 | ×3 |
| ✓ 4 | 15/7/2023 | 7th Michinoku Tsugaru Journey Run 150K | 142,00 | ×3 |
| ✓ 5 | 1/11/2025 | 3rd Mito Kaido Journey run | 130,00 | ×3 |
| ✓ 6 | 16/11/2024 | 2nd Mito Kaido Journey run | 130,00 | ×3 |
| ✓ 7 | 18/11/2023 | 1st Mito Kaido Journey run | 130,00 | ×3 |
| ✓ 8 | 28/6/2026 | 41. Lake Saroma 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 9 | 29/6/2025 | 40. Lake Saroma 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 10 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 11 | 25/6/2023 | 38. Lake Saroma 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 12 | 17/9/2022 | 1st Furano Biei Nature Run 100km | 100,00 | ×2 |
| ✓ 13 | 30/6/2019 | 34. Lake Saroma 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 14 | 22/9/2024 | 2nd Mina no Tenku Ultra Marathon | 75,00 | ×1 |
| ✓ 15 | 20/10/2024 | 31. Ultramarathon Okumusashi | 70,00 | ×1 |
| ✓ 16 | 26/1/2025 | 3. Minuma Challenge 60 | 62,00 | ×1 |
| ✓ 17 | 29/6/2014 | 29. Lake Saroma 50 km Ultramarathon | 50,00 | ×1 |