Izumi (西澤泉) Nishizawa
ID 152364
Born : 1960 Cat. M65 Ultrarunner since 2010 JPN
32
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
56
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 ?JPNJapan
36,2%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 8 843; Σ finishers = 24 429. 8 843 / 24 429 × 100 = 36.20%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed35
Km — ultra races4 222 km
> 100 km15
> 160 km8
> 200 km4
Longest race252,0 km
2nd Tokyo Great Race 250km — 5/11/2021

Km per year (ultra races)

727
5 races
2022
785
6 races
2023
678
5 races
2024
722
6 races
2025
100
1 race
2026

Race types (share of distance)

Road87,7%
Trail2,5%
Stage9,8%

Records

100 km9h46'50

HISTORY

32 race(s) · 6 stage(s) nested
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 12:24:11 h1766
2025
20.12 60km JPN2nd Tengu 100 - 60km 11:10:40 h28
30.11 45km JPN12th Trainic world Soto-Chichibu Trail Run 45km 8:26:59 h90
01–02.11 130km/2stages JPN3rd Mito Kaido Journey run 19:39:29 h44
29.06 100km JPN40. Lake Saroma 100 km Ultramarathon 11:43:59 h871
03.05 251km JPN20th River Road Foot Race 251 km 2d 03:16:02 h31
15–16.03 136km/2stages JPN13th Arakawa Riverside Journey Stage Race 19:17:14 h29
2024
16.11 130km JPN2nd Mito Kaido Journey run 23:00:24 h77
29.09 100km JPN2nd Mount Akagi 100 Ultra Marathon 13:51:02 h97
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 12:18:21 h1107
30–31.03 148km/2stages JPN1st Modern Japanese Silk Road Journey Run 23:38:47 h44
09.03 200km JPN14th Little Edo Oedo 200k 35:37:16 h222
2023
18.11 130km JPN1st Mito Kaido Journey run 21:30:35 h59
03.11 128km JPN4th Tokyo Great Race 128km 20:07:52 h5
17.09 127km JPN6th Utsukushima Fukushima Journey Run 127K 20:54:55 h15
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 11:20:48 h684
15.04 100km JPN2nd Yagurazawa Round Trip Pre-Tournament 17:35:45 h10
11.03 200km JPN13th Little Edo Oedo 200k 34:37:55 h174
2022
04.11 250km JPN3rd Tokyo Great Race 250km 46:35:20 h34
09.10 100km JPN14th Echigo Kubikino 100km Ultramarathon 11:23:46 h227
12.06 100km JPN16th Iwate Ginga 100km Marathon Challenge 10:41:04 h147
22.05 77km JPN27th Saba Highway Ultramarathon 10:36:01 h121
12.03 200km JPN12th Little Edo Oedo 200k 35:37:43 h177
2021
05.11 252km JPN2nd Tokyo Great Race 250km 44:57:31 h20
27.02 200km JPN11th Little Edo Oedo 200k 35:54:41 h205
2020
22.02 206km JPN10th Little Edo Oedo 205k 34:24:29 h163
2019
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 9:55:59 h392
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 9:54:29 h435
2017
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 9:56:15 h374
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 9:46:50 h410
2011
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 11:23:58 h802
2010
29.08 52km JPN58. Tsurunuma 52 km 5:12:19 h15