Chiho (山本知穂) Yamamoto
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1970
Cat. W55 Ultrarunner since 2013
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
24
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
Japan58,6%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 1 645; Σ finishers = 2 806. 1 645 / 2 806 × 100 = 58.62%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races654 km
> 100 km3
> 24h4
Longest race103,7 km
15th 24-hour relay & solo marathon Kobe — 1/8/2015
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2024 | ||||
| 17.08 | 24h | 24th 24-hour relay & solo marathon Kobe |
100.300 km | 86 |
| 2022 | ||||
| 18.09 | 60km | 20th Tango 60 km Ultramarathon |
8:30:28 h | 160 |
| 2017 | ||||
| 05.08 | 24h | 17th 24-hour relay & solo marathon Kobe |
57.800 km | 124 |
| 2016 | ||||
| 18.09 | 100km | 16th Tango 100 km Ultramarathon |
13:39:49 h | 1009 |
| 06.08 | 24h | 16th 24-hour relay & solo marathon Kobe |
100.300 km | 61 |
| 2015 | ||||
| 01.08 | 24h | 15th 24-hour relay & solo marathon Kobe |
103.700 km | 54 |
| 2014 | ||||
| 28.09 | 66km | 17th Muraoka 66 km Ultra Marathon |
8:45:46 h | 96 |
| 2013 | ||||
| 29.09 | 66km | 16th Muraoka 66 km Ultra Marathon |
8:03:37 h | 63 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 1/8/2015 | 15th 24-hour relay & solo marathon Kobe | 103,70 | ×4 |
| ✓ 2 | 17/8/2024 | 24th 24-hour relay & solo marathon Kobe | 100,30 | ×4 |
| ✓ 3 | 6/8/2016 | 16th 24-hour relay & solo marathon Kobe | 100,30 | ×4 |
| ✓ 4 | 18/9/2016 | 16th Tango 100 km Ultramarathon | 100,00 | ×4 |
| ✓ 5 | 28/9/2014 | 17th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 6 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 7 | 18/9/2022 | 20th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 8 | 5/8/2017 | 17th 24-hour relay & solo marathon Kobe | 57,80 | ×2 |