Masaru (泉多) Izumi
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Born : 1970
Cat. M55 Ultrarunner since 2013
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
19
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
Japan36,2%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 2 030; Σ finishers = 5 614. 2 030 / 5 614 × 100 = 36.16%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed5
Km — ultra races408 km
Longest race100,0 km
4th Tokyo Shibamata 100 km — 5/6/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road49,1%
Trail50,9%
Records
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2016 | ||||
| 05.06 | 100km | 4th Tokyo Shibamata 100 km |
11:29:23 h | 359 |
| 2015 | ||||
| 30.08 | 70km | 2nd Tsukuba Renjyo 70 km Road & Trail Run |
9:29:37 h | 82 |
| 06.06 | 100km | 3rd Tokyo Shibamata 100 km |
10:19:57 h | 184 |
| 2014 | ||||
| 20.09 | 66km | 1st SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup |
13:52:14 h | 270 |
| 2013 | ||||
| 13.10 | 71.5km | 21st Hasetsune Cup - Japan Mountain Endurance Race |
17:01:40 h | 1140 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 5/6/2016 | 4th Tokyo Shibamata 100 km | 100,00 | ×5 |
| ✓ 2 | 6/6/2015 | 3rd Tokyo Shibamata 100 km | 100,00 | ×5 |
| ✓ 3 | 13/10/2013 | 21st Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×3 |
| ✓ 4 | 30/8/2015 | 2nd Tsukuba Renjyo 70 km Road & Trail Run | 70,00 | ×3 |
| ✓ 5 | 20/9/2014 | 1st SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup | 66,00 | ×3 |