Yoko (山内洋子) Yamauchi

ID 1219342

Born : 1970 Cat. W55 Ultrarunner since 2018

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

Japan

37,8%

Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 1 697; Σ finishers = 4 489. 1 697 / 4 489 × 100 = 37.80%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed5

Km — ultra races371 km

Longest race100,0 km

27th Yukihashi to Beppu 100 km — 11/10/2025

Km per year (ultra races)

2022

2023

2024

100

2025

2026

Race types (share of distance)

Road27,0%

Trail73,0%

Records

50 km9h41'37 100 km16h53'02

HISTORY

5 race(s)

Date		Race	Perf.	Rk
2025
11.10	100km	27th Yukihashi to Beppu 100 km	19:27:47 h	672
2019
03.11	48km	3rd Ninja Trail Run	8:20:48 h	185
06.10	73km	5th Gasando Trail running race	13:02:18 h	117
13.07	100km	12th OSJ Ontake 100km Ultra Trail	16:53:02 h	556
2018
02.12	50km	6th Kumano Old Trails	9:41:37 h	172

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	11/10/2025	27th Yukihashi to Beppu 100 km	100,00	×5
✓ 2	13/7/2019	12th OSJ Ontake 100km Ultra Trail	100,00	×5
✓ 3	6/10/2019	5th Gasando Trail running race	73,00	×4
✓ 4	2/12/2018	6th Kumano Old Trails	50,00	×2
✓ 5	3/11/2019	3rd Ninja Trail Run	48,00	×2