Kazuya (長沼一也) Naganuma
ID 410022
Born : 1978 Cat. M45 Ultrarunner since 2013 JPN
36
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
40,8%
Rank quotient ?This runner's calculation uses 36 eligible race(s): Σ(rank − 1) = 18 533; Σ finishers = 45 442. 18 533 / 45 442 × 100 = 40.78%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed36
Km — ultra races3 618 km
> 100 km1
Longest race118,0 km
28th Fuji 5 Lakes 118 km Challenge — 22/4/2018

Km per year (ultra races)

300
3 races
2022
200
2 races
2023
300
3 races
2024
300
3 races
2025
2026

Race types (share of distance)

Road88,9%
Trail11,1%

Records

100 km9h21'43

HISTORY

36 race(s)
DateRacePerf.Rk
2025
14.09 100km JPN23th Tango 100 km Ultramarathon 13:10:04 h615
08.06 100km JPN13th Hida Takayama 100 km Ultramarathon 10:49:20 h229
18.05 100km JPN31th Yatsugatake Nobeyama 100 km 13:41:24 h897
2024
15.09 100km JPN22th Tango 100 km Ultramarathon 13:52:37 h744
09.06 100km JPN12th Hida Takayama 100 km Ultramarathon 12:56:39 h880
19.05 100km JPN30th Yatsugatake Nobeyama 100 km 13:31:45 h774
2023
11.06 100km JPN11th Hida Takayama 100 km Ultramarathon 11:44:32 h359
21.05 100km JPN29th Yatsugatake Nobeyama 100 km 13:37:39 h540
2022
18.09 100km JPN20th Tango 100 km Ultramarathon 13:08:30 h350
12.06 100km JPN10th Hida Takayama 100 km Ultramarathon 13:43:03 h1005
22.05 100km JPN28th Yatsugatake Nobeyama 100 km 12:08:50 h275
2019
15.09 100km JPN19th Tango 100 km Ultramarathon 12:40:40 h406
09.06 100km JPN8th Hida Takayama 100 km Ultramarathon 10:16:36 h187
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 13:16:16 h931
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 11:50:19 h464
2018
16.09 100km JPN18th Tango 100 km Ultramarathon 13:44:43 h892
10.06 100km JPN7th Hida Takayama 100 km Ultramarathon 12:47:04 h804
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 11:43:23 h324
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 13:27:52 h144
2017
11.06 100km JPN6th Hida Takayama 100 km Ultramarathon 10:52:35 h278
21.05 100km JPN23rd Yatsugatake Nobeyama 100 km 13:36:05 h772
23.04 100km JPN27th Fuji 5 Lakes 100 km Challenge 9:21:43 h56
2016
18.09 100km JPN16th Tango 100 km Ultramarathon 11:51:00 h345
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 11:09:37 h248
22.05 100km JPN22nd Yatsugatake Nobeyama 100 km 13:42:15 h1098
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 10:51:33 h226
2015
20.09 100km JPN15th Tango 100 km Ultramarathon 12:21:05 h600
07.06 100km JPN4th Hida Takayama 100 km Ultramarathon 11:15:40 h216
17.05 100km JPN21st Yatsugatake Nobeyama 100 km 12:23:28 h506
19.04 100km JPN25th Fuji 5 Lakes 100 km Challenge 10:47:36 h222
2014
14.09 100km JPN14th Tango 100 km Ultramarathon 13:46:42 h1214
08.06 100km JPN3rd Hida Takayama 100 km Ultramarathon 12:42:31 h517
18.05 100km JPN20th Yatsugatake Nobeyama 100 km 13:30:02 h821
20.04 100km JPN24th Fuji 5 Lakes 100 km Challenge 10:31:08 h161
2013
15.09 100km JPN13th Tango 100 km Ultramarathon 11:19:44 h263
21.04 100km JPN23rd Fuji 5 Lakes 100 km Challenge 12:13:51 h206