Naoya (坂田直哉) Sakata
ID 177100
Born : 1972 Cat. M50 Ultrarunner since 2009 JPN
29
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
2
Countries visited ?FRAFranceJPNJapan
20,1%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 8 145; Σ finishers = 40 579. 8 145 / 40 579 × 100 = 20.07%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed29
Km — ultra races3 067 km
> 100 km7
> 160 km3
Longest race170,3 km
4th Ultra-Trail Mt. Fuji (UTMF) — 25/9/2015

Km per year (ultra races)

200
2 races
2022
210
2 races
2023
209
2 races
2024
200
2 races
2025
100
1 race
2026

Race types (share of distance)

Road52,2%
Trail47,8%

Records

100 km8h47'0750 mi13h04'17100 mi29h05'28

HISTORY

29 race(s)
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 9:38:40 h389
2025
20.07 99.5km JPN17th OSJ Ontake 100km Ultra Trail 15:13:12 h432
29.06 100km JPN40. Lake Saroma 100 km Ultramarathon 10:16:21 h390
2024
14.07 109.2km JPN16th OSJ Ontake 100km Ultra Trail 16:05:57 h450
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 10:27:28 h390
2023
17.09 110km JPN15th Shinetsu Five Mountains Trail 110km 21:20:10 h178
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 9:11:16 h128
2022
05.11 100km JPN2nd OSJ Kami 100 22:47:20 h93
22.05 100km JPN10th Tokyo Shibamata 100 km 9:38:09 h65
2020
13.12 66km JPN7th Izu Trail Journey 10:21:25 h465
2019
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 9:53:21 h364
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 8:54:52 h146
2017
23.09 129km JPN4th SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 29:06:18 h223
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 9:57:34 h382
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 8:47:07 h145
2015
25.09 170.3km JPN4th Ultra-Trail Mt. Fuji 41:14:27 h311
28.08 170km FRA13ème Ultra Trail Tour du Mont Blanc 44:14:48 h1239
04.07 80km JPN5th Utsukushigahara 80 km Trail Run 13:04:17 h151
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 8:47:43 h142
15.03 72km JPN2nd Izu Trail Journey 10:18:32 h189
2014
20.09 120km JPN1st SkyView Ultra-Trail - Yamada Noboru Memorial Cup 27:36:58 h210
05.07 80km JPN4th Utsukushigahara 80 km Trail Run 15:06:22 h229
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 10:45:12 h392
2013
07.09 100mi JPN2nd OSJ Yatsugatake Super Trail 100 miles race 29:05:28 h55
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 9:21:47 h172
2012
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 8:57:21 h139
2011
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 9:36:58 h217
2010
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 10:38:00 h360
2009
26.04 100km JPN19th Fuji 5 Lakes 100 km Challenge 11:12:53 h128