Masanori (丸山政憲) Maruyama
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Born : 1948
Cat. M75 Ultrarunner since 2013
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
21
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
Japan75,7%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 1 945; Σ finishers = 2 570. 1 945 / 2 570 × 100 = 75.68%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races492 km
Longest race100,0 km
18th Muraoka 100 km Ultra Marathon — 27/9/2015
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 28.09 | 64km | 28th Muraoka 64 km Ultra Marathon |
9:50:03 h | 559 |
| 2024 | ||||
| 29.09 | 64km | 27th Muraoka 64 km Ultra Marathon |
11:38:49 h | 324 |
| 2023 | ||||
| 24.09 | 66km | 26th Muraoka 66 km Ultra Marathon |
10:36:54 h | 198 |
| 2019 | ||||
| 29.09 | 66km | 22th Muraoka 66 km Ultra Marathon |
9:52:11 h | 145 |
| 2015 | ||||
| 27.09 | 100km | 18th Muraoka 100 km Ultra Marathon |
13:44:24 h | 416 |
| 2014 | ||||
| 28.09 | 66km | 17th Muraoka 66 km Ultra Marathon |
8:52:30 h | 111 |
| 2013 | ||||
| 29.09 | 66km | 16th Muraoka 66 km Ultra Marathon |
9:26:28 h | 199 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/9/2015 | 18th Muraoka 100 km Ultra Marathon | 100,00 | ×4 |
| ✓ 2 | 24/9/2023 | 26th Muraoka 66 km Ultra Marathon | 66,00 | ×3 |
| ✓ 3 | 29/9/2019 | 22th Muraoka 66 km Ultra Marathon | 66,00 | ×3 |
| ✓ 4 | 28/9/2014 | 17th Muraoka 66 km Ultra Marathon | 66,00 | ×3 |
| ✓ 5 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×3 |
| ✓ 6 | 28/9/2025 | 28th Muraoka 64 km Ultra Marathon | 64,00 | ×3 |
| ✓ 7 | 29/9/2024 | 27th Muraoka 64 km Ultra Marathon | 64,00 | ×3 |