Shoichi (中平昭一) Nakahira
Born : 1972 Cat. M50 Ultrarunner since 2010 JPN
37
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
36,7%
Rank quotient ?This runner's calculation uses 37 eligible race(s): Σ(rank − 1) = 7 554; Σ finishers = 20 559. 7 554 / 20 559 × 100 = 36.74%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed37
Km — ultra races3 182 km
> 100 km4
> 160 km2
Longest race200,0 km

Km per year (ultra races)

189
3 races
2022
506
7 races
2023
268
3 races
2024
938
10 races
2025
2026

Race types (share of distance)

Road58,7%
Trail41,3%

HISTORY

37 race(s)
DateRacePerf.Rk
2025
21.12 100km JPN8th Okinawa 100km Ultramarathon 13:57:25 h607
30.11 47km JPN4th Rokko 24 peaks hunt 7:50:23 h15
01.11 100mi JPN5th Manno Mountain Madness 2025 34:54:25 h18
19.10 100km JPN31th River Shimanto 100km 10:03:21 h118
14.09 100km JPN23th Tango 100 km Ultramarathon 11:03:11 h176
03.08 63.5km JPN5th Kyushu Sekiryou Piston trail 11:52:55 h20
15.06 60km JPN1st Shimanami Surround 60km 10:08:43 h271
08.06 57km JPN7th Nagi Peaks Tough Trail Challenge 15:07:50 h51
05.04 200km JPN2nd Leonidas Run 200km 28:25:47 h8
15.03 50km JPN11th Mt. Hiei Int. 50 km Trail Run 7:53:41 h60
2024
20.10 100km JPN30th River Shimanto 100km 9:43:59 h130
25.08 53.2km JPN3rd Ainan Maranic - Food Sea and Sun 8:30:27 h262
11.05 115.1km JPN2nd Aso Volcano Trail 20:26:55 h109
2023
17.12 50km JPN7th Minami-aso caldera Trail 9:31:35 h119
28.10 80km JPN3rd Manno Mountain Madness 2023 14:38:09 h20
22.10 70km JPN8th Ryoma Dappan Trail Race 11:07:23 h16
15.10 100km JPN29th River Shimanto 100km 13:41:59 h895
27.08 53km JPN2nd Ainan Maranic - Food Sea and Sun 8:20:55 h264
02.06 103km JPN2nd Tamba 100 Adventure Trail - 100km 34:21:48 h35
09.04 50km JPN5th Onigajo Peaks Trail 9:04:16 h27
2022
23.10 82km JPN7th Osorakan-Trail 82 km 14:41:24 h35
05.06 57km JPN4th Nagi Peaks Tough Trail Challenge 10:47:36 h75
10.04 50km JPN4th Onigajo Peaks Trail 9:29:52 h30
2021
24.10 70km JPN6th Ryoma Dappan Trail Race 10:14:45 h37
2020
25.10 70km JPN5th Ryoma Dappan Trail Race 10:44:50 h39
2019
27.10 70km JPN4th Ryoma Dappan Trail Race 11:10:00 h26
20.10 100km JPN25th River Shimanto 100km 13:47:53 h1122
2018
21.10 100km JPN24th River Shimanto 100km 11:08:54 h310
2017
15.10 100km JPN23rd River Shimanto 100km 11:42:34 h455
2016
06.11 70km JPN1st Ryoma Dappan Trail Race 11:45:00 h27
16.10 100km JPN22nd River Shimanto 100km 10:40:08 h238
2015
18.10 100km JPN21st River Shimanto 100km 10:35:59 h188
2014
19.10 100km JPN20th River Shimanto 100km 10:33:55 h196
2013
20.10 100km JPN19th River Shimanto 100km 9:53:02 h118
2012
21.10 100km JPN18th River Shimanto 100km 10:59:16 h213
2011
16.10 100km JPN17th River Shimanto 100km 12:16:09 h455
2010
17.10 100km JPN16th River Shimanto 100km 13:26:32 h806