Kazumi (勇田和美) Yuda

Born : 1978 Cat. W45 Ultrarunner since 2022

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

81,6%

Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 8 588; Σ finishers = 10 527. 8 588 / 10 527 × 100 = 81.58%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20

Km — ultra races1 690 km

> 100 km4

Longest race136,0 km

12th Arakawa Riverside Journey Stage Race — 16/3/2024

Km per year (ultra races)

114

2022

398

2023

746

2024

332

2025

100

2026

Race types (share of distance)

Road82,5%

Trail6,2%

Stage11,3%

Records

100 km12h46'40

HISTORY

19 race(s) · 2 stage(s) nested

Date		Race	Perf.	Rk
2026
28.06	100km	41. Lake Saroma 100 km Ultramarathon	12:50:10 h	2330
2025
30.08	105km	2nd Sendai Ultra 100km	17:43:33 h	40
22.08	101km	12th World Cultural Heritage "Fuji" Foot Race	16:57:24 h	192
10.05	55km	5th Kimitsu Ultra Marathon	6:59:03 h	189
12.04	71km	20th Toda Saiko 70 km	8:26:02 h	167
2024
13.10	100km	15th Echigo Kubikino 100km Ultramarathon	13:40:55 h	699
29.09	88km	27th Muraoka 88 km Ultra Marathon	13:17:46 h	107
14.09	122km	7th Utsukushima Fukushima Journey Run 122K	23:32:45 h	46
30.06	100km	39. Lake Saroma 100 km Ultramarathon	12:46:40 h	1531
26.05	100km	30th Ebisu-Daikoku 100 km Marathon	13:49:36 h	270
21.04	100km	5th Yamadera Zao 100 km Ultra Marathon	13:46:17 h	113
16–17.03	136km/2stages	12th Arakawa Riverside Journey Stage Race	20:17:00 h	58
16.03	82km	12th Arakawa Riverside Journey Stage Race - Stage 1	11:23:53 h	70
17.03	54.2km	12th Arakawa Riverside Journey Stage Race - Stage 2	8:53:07 h	119
2023
15.10	100km	29th River Shimanto 100km	13:26:15 h	783
24.09	66km	26th Muraoka 66 km Ultra Marathon	9:40:53 h	136
04.06	78km	30. Ultramarathon Okumusashi	10:41:48 h	577
16.04	100km	33th Fuji 4 Lakes 100 km Challenge	13:54:16 h	1096
19.03	54.2km	11th Arakawa Riverside Journey Stage Race - Stage 2	8:08:35 h	85
2022
18.09	60km	20th Tango 60 km Ultramarathon	8:13:53 h	129
03.07	8h	28th 8-Hour Endurance Race Tokorozawa	53.900 km	143

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	16/3/2024	12th Arakawa Riverside Journey Stage Race	136,00	×3
✓ 2	14/9/2024	7th Utsukushima Fukushima Journey Run 122K	122,00	×3
✓ 3	30/8/2025	2nd Sendai Ultra 100km	105,00	×3
✓ 4	22/8/2025	12th World Cultural Heritage "Fuji" Foot Race	101,00	×2
✓ 5	28/6/2026	41. Lake Saroma 100 km Ultramarathon	100,00	×2
✓ 6	13/10/2024	15th Echigo Kubikino 100km Ultramarathon	100,00	×2
✓ 7	30/6/2024	39. Lake Saroma 100 km Ultramarathon	100,00	×2
✓ 8	26/5/2024	30th Ebisu-Daikoku 100 km Marathon	100,00	×2
✓ 9	21/4/2024	5th Yamadera Zao 100 km Ultra Marathon	100,00	×2
✓ 10	15/10/2023	29th River Shimanto 100km	100,00	×2
✓ 11	16/4/2023	33th Fuji 4 Lakes 100 km Challenge	100,00	×2
✓ 12	29/9/2024	27th Muraoka 88 km Ultra Marathon	88,00	×2
✓ 13	4/6/2023	30. Ultramarathon Okumusashi	78,00	×2
✓ 14	12/4/2025	20th Toda Saiko 70 km	71,00	×2
✓ 15	24/9/2023	26th Muraoka 66 km Ultra Marathon	66,00	×1
✓ 16	18/9/2022	20th Tango 60 km Ultramarathon	60,00	×1
✓ 17	10/5/2025	5th Kimitsu Ultra Marathon	55,00	×1
✓ 18	3/7/2022	28th 8-Hour Endurance Race Tokorozawa	53,90	×1