Shoma (五十嵐翔馬) Igarashi
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Born : 1996
Cat. M23 Ultrarunner since 2023
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
Japan68,3%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 2 429; Σ finishers = 3 556. 2 429 / 3 556 × 100 = 68.31%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed5
Km — ultra races449 km
> 100 km2
Longest race114,0 km
4th Aso Volcano Trail — 9/5/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road41,0%
Trail59,0%
Records
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 09.05 | 114km | 4th Aso Volcano Trail |
27:26:20 h | 398 |
| 2025 | ||||
| 15.11 | 101km | 4th Kumagawa Revival Trail |
25:36:51 h | 91 |
| 08.06 | 84.39km | 9th JAL Mukatsuku Double Marathon |
11:11:53 h | 235 |
| 2024 | ||||
| 15.12 | 50km | 9th Minami-aso caldera Trail |
8:54:02 h | 82 |
| 2023 | ||||
| 07.10 | 100km | 25th Yukihashi to Beppu 100 km |
23:36:46 h | 1628 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 9/5/2026 | 4th Aso Volcano Trail | 114,00 | ×5 |
| ✓ 2 | 15/11/2025 | 4th Kumagawa Revival Trail | 101,00 | ×5 |
| ✓ 3 | 7/10/2023 | 25th Yukihashi to Beppu 100 km | 100,00 | ×5 |
| ✓ 4 | 8/6/2025 | 9th JAL Mukatsuku Double Marathon | 84,39 | ×4 |
| ✓ 5 | 15/12/2024 | 9th Minami-aso caldera Trail | 50,00 | ×2 |