Masayuki (西田正幸) Nishida

Born : 1963 Cat. M60 Ultrarunner since 2012

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

41,2%

Rank quotient ?This runner's calculation uses 64 eligible race(s): Σ(rank − 1) = 13 982; Σ finishers = 33 929. 13 982 / 33 929 × 100 = 41.21%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed66

Km — ultra races7 391 km

> 100 km20

> 160 km9

> 200 km6

Longest race520,0 km

12th River Road Foot Race 520 km — 30/4/2016

Km per year (ultra races)

689

2022

199

2023

216

2024

2025

100

2026

Race types (share of distance)

Road93,9%

Trail3,2%

Stage2,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 30

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

100 km9h16'49

HISTORY

65 race(s) · 2 stage(s) nested

Date		Race	Perf.	Rk
2026
31.05	100km	1st Nara Ultra Marathon	13:11:55 h	1146
2024
25.05	63km	8th Yokosuka Miura 63km Michikusa Ultra Marathon B	8:15:17 h	114
30.03	78km	1st Modern Japanese Silk Road Journey Run - Stage 1	13:19:44 h	81
16.03	75km	8th Minamiboso 75km	13:45:55 h	169
2023
11.11	66km	10th Michikusa-Ultra, Minamiizu 66 km	11:39:54 h	146
11.06	71km	11th Hida Takayama 71 km Ultramarathon	7:53:53 h	76
16.04	62km	33th Fuji 3 Lakes 62 km Challenge	9:49:20 h	708
2022
20.11	63km	1. Minuma Challenge 60	7:50:10 h	37
15.10	150km	1st Yagurazawa Round Trip Pre-Tournament	30:54:53 h	69
20.08	101km	9th World Cultural Heritage "Fuji" Foot Race	16:38:32 h	106
12.06	71km	10th Hida Takayama 71 km Ultramarathon	8:08:06 h	80
05.06	78km	29. Ultramarathon Okumusashi	10:58:44 h	721
22.05	71km	28th Yatsugatake Nobeyama 71 km	9:48:06 h	191
02.04	155km	2nd Tone River Run Up Journey Run Downstream	27:37:00 h	74
2021
14.11	63km	0. Minuma Challenge 60	8:47:51 h	74
05.11	252km	2nd Tokyo Great Race 250km	2d 01:09:06 h	33
16.10	120km	1st Tone River Run Up Journey Run Upstream	22:26:00 h	64
04.07	8h	27th 8-Hour Endurance Race Tokorozawa	63.700 km	219
03.05	251km	16th River Road Foot Race 254 km	2d 04:51:43 h	35
03–04.04	136km/2stages	9th Arakawa Riverside Journey Stage Race	20:00:00 h	32
03.04	80km	9th Arakawa Riverside Journey Stage Race - Stage 1	11:52:00 h	44
04.04	56km	9th Arakawa Riverside Journey Stage Race - Stage 2	8:08:00 h	29
27.02	200km	11th Little Edo Oedo 200k	33:31:07 h	111
2020
24.10	146km	2nd Autumn leaves in Okumusashi / Chichibu Journey run	21:35:39 h	77
19.09	123km	3rd Utsukushima Fukushima Journey Run 123K	20:02:00 h	93
2019
02.11	222km	6th Setouchi Angya 2019	36:15:00 h	12
19.10	51.4km	10th Inagawa 100km Ultra-Marathon	5:34:50 h	86
29.09	100km	22th Muraoka 100 km Ultra Marathon	13:39:09 h	385
15.09	88km	10th Akiota Yajirushi Marathon 88km	12:31:03 h	203
08.09	100km	7th 100 km Ultramarathon Hakusan-Shirakawago	12:52:30 h	194
17.08	101km	7th World Cultural Heritage "Fuji" Foot Race	14:48:31 h	72
09.06	100km	8th Hida Takayama 100 km Ultramarathon	12:17:02 h	792
02.06	100km	2nd Nanto 100 km Ultramarathon	13:36:15 h	182
02.05	70km	27. Mukogawa Yurikamome Ultra Marathon	7:43:12 h	226
21.04	70km	11th 70 km Ultra Maranic Osaka	9:07:14 h	107
2018
01.12	200km	3rd Santo Ultra Maranic - Santo Course	32:07:00 h	7
02.11	105km	Tachibana Bay Coast 105 Ultra Marathon	15:35:23 h	121
16.09	100km	18th Tango 100 km Ultramarathon	13:24:24 h	689
09.09	100km	6th 100 km Ultramarathon Hakusan-Shirakawago	13:33:12 h	477
10.06	84.39km	2nd JAL Mukatsuku Double Marathon	11:57:45 h	242
10.06	71km	7th Hida Takayama 71 km Ultramarathon	8:03:38 h	98
03.05	70km	26. Mukogawa Yurikamome Ultra Marathon	8:10:12 h	456
22.04	65km	20. Okukumano 65 km Ultramarathon	8:20:00 h	38
14.04	102km	4th Okuizumo Ultra Orochi 100km Tooashi	14:04:43 h	215
25.03	56km	18th Mt. Rocco Cannonball Run - 56 km Speed	10:17:24 h	336
2017
02.12	200km	2nd Santo Ultra Maranic - Santo Course	33:08:00 h	14
24.09	88km	20th Muraoka 88 km Ultra Marathon	12:49:46 h	137
08.01	100km	2nd Yakushima Ultramarathon	15:19:00 h	91
2016
11.09	100km	1st Koyasan and Ryujin-Onsen 100 km Ultra Marathon	12:26:48 h	105
21.08	97km	4th World Cultural Heritage "Fuji" Foot Race	13:13:00 h	28
05.06	78km	23. Ultramarathon Okumusashi	10:50:42 h	1153
29.05	100km	23rd Ebisu-Daikoku 100 km Marathon	11:42:54 h	153
30.04	520km	12th River Road Foot Race 520 km	4d 16:33:19 h	22
27.03	100km	2nd Osaka Yodogawa 100 km Ultra Marathon	10:16:26 h	46
2015
20.09	100km	15th Tango 100 km Ultramarathon	13:11:47 h	979
22.06	77km	22. Ultramarathon Okumusashi	8:03:35 h	265
03.05	255km	11th River Road Foot Race 255 km	44:21:51 h	4
11.04	70km	10th Toda Saiko 70 km	6:52:57 h	107
29.03	100km	1st Osaka Yodogawa 100 km Ultra Marathon	9:16:49 h	42
28.02	203km	5th Little Edo Oedo 200k	31:54:18 h	91
2014
27.07	77km	21. Ultramarathon Okumusashi	9:24:24 h	317
08.06	100km	10th Iwate Ginga 100km Marathon Challenge	10:34:21 h	161
18.05	100km	20th Yatsugatake Nobeyama 100 km	12:34:45 h	467
2013
30.06	100km road race	28. Lake Saroma 100 km Ultramarathon	9:25:22 h	187
01.06	100km	1st Tokyo Shibamata 100 km	9:31:26 h	56
21.04	112km	23rd Fuji 5 Lakes 112 km Challenge	12:31:32 h	47
2012
24.06	100km road race	27. Lake Saroma 100 km Ultramarathon	9:39:01 h	261

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	30/4/2016	12th River Road Foot Race 520 km	520,00	×7
✓ 2	3/5/2015	11th River Road Foot Race 255 km	255,00	×3
✓ 3	5/11/2021	2nd Tokyo Great Race 250km	252,00	×3
✓ 4	3/5/2021	16th River Road Foot Race 254 km	251,00	×3
✓ 5	2/11/2019	6th Setouchi Angya 2019	222,00	×3
✓ 6	28/2/2015	5th Little Edo Oedo 200k	203,00	×2
✓ 7	27/2/2021	11th Little Edo Oedo 200k	200,00	×2
✓ 8	1/12/2018	3rd Santo Ultra Maranic - Santo Course	200,00	×2
✓ 9	2/12/2017	2nd Santo Ultra Maranic - Santo Course	200,00	×2
✓ 10	2/4/2022	2nd Tone River Run Up Journey Run Downstream	155,00	×2
✓ 11	15/10/2022	1st Yagurazawa Round Trip Pre-Tournament	150,00	×2
✓ 12	24/10/2020	2nd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×2
✓ 13	3/4/2021	9th Arakawa Riverside Journey Stage Race	136,00	×1
✓ 14	19/9/2020	3rd Utsukushima Fukushima Journey Run 123K	123,00	×1
✓ 15	16/10/2021	1st Tone River Run Up Journey Run Upstream	120,00	×1
✓ 16	21/4/2013	23rd Fuji 5 Lakes 112 km Challenge	112,00	×1
✓ 17	2/11/2018	Tachibana Bay Coast 105 Ultra Marathon	105,00	×1
✓ 18	14/4/2018	4th Okuizumo Ultra Orochi 100km Tooashi	102,00	×1
✓ 19	20/8/2022	9th World Cultural Heritage "Fuji" Foot Race	101,00	×1
✓ 20	17/8/2019	7th World Cultural Heritage "Fuji" Foot Race	101,00	×1
✓ 21	31/5/2026	1st Nara Ultra Marathon	100,00	×1
✓ 22	29/9/2019	22th Muraoka 100 km Ultra Marathon	100,00	×1
✓ 23	8/9/2019	7th 100 km Ultramarathon Hakusan-Shirakawago	100,00	×1
✓ 24	9/6/2019	8th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 25	2/6/2019	2nd Nanto 100 km Ultramarathon	100,00	×1
✓ 26	16/9/2018	18th Tango 100 km Ultramarathon	100,00	×1
✓ 27	9/9/2018	6th 100 km Ultramarathon Hakusan-Shirakawago	100,00	×1
✓ 28	8/1/2017	2nd Yakushima Ultramarathon	100,00	×1
✓ 29	11/9/2016	1st Koyasan and Ryujin-Onsen 100 km Ultra Marathon	100,00	×1
✓ 30	29/5/2016	23rd Ebisu-Daikoku 100 km Marathon	100,00	×1
✓ 31	27/3/2016	2nd Osaka Yodogawa 100 km Ultra Marathon	100,00	×1
✓ 32	20/9/2015	15th Tango 100 km Ultramarathon	100,00	×1
✓ 33	29/3/2015	1st Osaka Yodogawa 100 km Ultra Marathon	100,00	×1
✓ 34	8/6/2014	10th Iwate Ginga 100km Marathon Challenge	100,00	×1
✓ 35	18/5/2014	20th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 36	30/6/2013	28. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 37	1/6/2013	1st Tokyo Shibamata 100 km	100,00	×1
✓ 38	24/6/2012	27. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 39	21/8/2016	4th World Cultural Heritage "Fuji" Foot Race	97,00	×1
✓ 40	15/9/2019	10th Akiota Yajirushi Marathon 88km	88,00	×1
✓ 41	24/9/2017	20th Muraoka 88 km Ultra Marathon	88,00	×1
✓ 42	10/6/2018	2nd JAL Mukatsuku Double Marathon	84,39	×1
✓ 43	5/6/2022	29. Ultramarathon Okumusashi	78,00	×1
✓ 44	5/6/2016	23. Ultramarathon Okumusashi	78,00	×1
✓ 45	22/6/2015	22. Ultramarathon Okumusashi	77,00	×1
✓ 46	27/7/2014	21. Ultramarathon Okumusashi	77,00	×1
✓ 47	16/3/2024	8th Minamiboso 75km	75,00	×1
✓ 48	11/6/2023	11th Hida Takayama 71 km Ultramarathon	71,00	×1
✓ 49	12/6/2022	10th Hida Takayama 71 km Ultramarathon	71,00	×1
✓ 50	22/5/2022	28th Yatsugatake Nobeyama 71 km	71,00	×1
✓ 51	2/5/2019	27. Mukogawa Yurikamome Ultra Marathon	70,00	—
✓ 52	21/4/2019	11th 70 km Ultra Maranic Osaka	70,00	—
✓ 53	3/5/2018	26. Mukogawa Yurikamome Ultra Marathon	70,00	—
✓ 54	11/4/2015	10th Toda Saiko 70 km	70,00	—
✓ 55	11/11/2023	10th Michikusa-Ultra, Minamiizu 66 km	66,00	—
✓ 56	22/4/2018	20. Okukumano 65 km Ultramarathon	65,00	—
✓ 57	4/7/2021	27th 8-Hour Endurance Race Tokorozawa	63,70	—
✓ 58	25/5/2024	8th Yokosuka Miura 63km Michikusa Ultra Marathon B	63,00	—
✓ 59	20/11/2022	1. Minuma Challenge 60	63,00	—
✓ 60	14/11/2021	0. Minuma Challenge 60	63,00	—
✓ 61	16/4/2023	33th Fuji 3 Lakes 62 km Challenge	62,00	—
62	25/3/2018	18th Mt. Rocco Cannonball Run - 56 km Speed	56,00	—
63	19/10/2019	10th Inagawa 100km Ultra-Marathon	51,40	—