Akiko (片山明子) Katayama
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Born : 1963
Cat. W60 Ultrarunner since 2013
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
Japan71,1%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 4 467; Σ finishers = 6 287. 4 467 / 6 287 × 100 = 71.05%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 488 km
> 100 km1
Longest race112,0 km
27th Mt. Rocco Cannonball Run - 112 km Buddy — 28/10/2022
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road88,6%
Trail11,4%
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 28/10/2022 | 27th Mt. Rocco Cannonball Run - 112 km Buddy | 112,00 | ×3 |
| ✓ 2 | 19/10/2025 | 31th River Shimanto 100km | 100,00 | ×3 |
| ✓ 3 | 28/4/2019 | 21. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 20/1/2019 | 29th Miyako 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 22/4/2018 | 20. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 24/4/2016 | 18. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 26/4/2015 | 17. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 8 | 27/4/2014 | 16. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 9 | 29/9/2019 | 22th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 10 | 24/9/2017 | 20th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 11 | 25/9/2016 | 19th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 12 | 27/9/2015 | 18th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 13 | 28/9/2014 | 17th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 14 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 15 | 20/6/2026 | 2nd Kaga Spa by UTMB - Kaga Spa Trail Endurance 50 | 58,00 | ×1 |
| ✓ 16 | 24/3/2019 | 20th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×1 |
| ✓ 17 | 26/3/2017 | 16th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×1 |