Nobuko (宇佐美展子) Usami
Born : 1967 Cat. W55 Ultrarunner since 2007 JPN
100
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
100
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
72,2%
Rank quotient ?This runner's calculation uses 134 eligible race(s): Σ(rank − 1) = 48 867; Σ finishers = 67 673. 48 867 / 67 673 × 100 = 72.21%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed137
Km — ultra races17 910 km
> 100 km60
> 160 km36
> 200 km20
Longest race395,0 km

Km per year (ultra races)

1 948
11 races
2022
2 073
13 races
2023
1 137
8 races
2024
1 128
10 races
2025
1 039
9 races
2026

Race types (share of distance)

Road91,3%
Trail3,8%
Stage1,9%
Ult.Walk2,9%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F3
🏅 Top 31
🏅 Top 3 F16
Longest winning streak0
Current streak0

HISTORY

134 race(s) · 2 stage(s) nested
DateRacePerf.Rk
2026
14.06 84.39km JPN10th JAL Mukatsuku Double Marathon 12:37:03 h355
31.05 100km JPN1st Nara Ultra Marathon 14:28:49 h2161
02.05 200km JPN9th Ultra Walking around Lake Biwa 43:00:32 h46
04.04 150km JPN9th Lake Biwa Kaizu Sakura Maranic - 150 km 26:47:00 h11
14.03 200km JPN16th Little Edo Oedo 200k 35:34:19 h232
21.02 105km JPN1st Lake Hamana and the Enshu Tokaido Ultra 19:04:54 h21
14.02 50km JPN1st One-day 50km Ultra tour in the Chubu region 7:21:03 h14
01.02 50km JPN5th Amami yori yori Run 7:50:56 h55
11.01 100km JPN9th Yakushima Ultramarathon 100 km 15:40:43 h119
2025
01.11 100km JPN1st BIWA100 Ultra Walk 18:22:41 h43
19.07 102km JPN2nd Shinshu Nakasendo 12 Stations Ultra Race 20:35:51 h26
08.06 84.39km JPN9th JAL Mukatsuku Double Marathon 12:28:43 h336
17.05 102km JPN4th Kobe Akashi Ultra Marathon 18:15:19 h15
20.04 70km JPN16th 70 km Ultra Maranic Osaka 9:55:31 h167
05.04 150km JPN8th Lake Biwa Kaizu Sakura Maranic - 150 km 25:30:00 h11
21.03 120km JPN1st Izuichi Great Race 120km 23:34:11 h11
15.03 200km JPN15th Little Edo Oedo 200k 35:46:03 h190
02.02 100km JPN4th Amami yori yori Run 15:07:38 h48
12.01 100km JPN8th Yakushima Ultramarathon 100 km 15:44:28 h107
2024
16.11 130km JPN2nd Mito Kaido Journey run 24:53:38 h118
02.11 250km JPN5th Tokyo Great Race 250km RE 47:47:00 h32
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 12:54:32 h1716
09.06 84.39km JPN8th JAL Mukatsuku Double Marathon 12:08:05 h280
25.05 125km JPN8th Fujisan Issyu Walking 21:50:26 h24
30–31.03 148km/2stages JPN1st Modern Japanese Silk Road Journey Run 26:00:23 h63
09.03 200km JPN14th Little Edo Oedo 200k 35:17:36 h196
14.01 100km JPN7th Yakushima Ultramarathon 100 km 15:32:24 h69
2023
17.12 100km JPN6th Okinawa 100km Ultramarathon 13:43:55 h483
18.11 100km JPN1st Owari Mikawa Ultra Walking 17:44:08 h7
03.11 276km JPN17th Nagasaki Tachibana Gulf Coast Super Maranic 276 2d 06:39:52 h10
28.10 147km JPN5th Autumn leaves in Okumusashi / Chichibu Journey run 25:30:27 h157
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 12:57:47 h1897
11.06 84.39km JPN7th JAL Mukatsuku Double Marathon 12:21:38 h202
29.04 395km JPN2nd Reiheishi Michi Kyoto to Nikko - 395 km 7d 13:19:29 h9
15.04 160km JPN2nd Yagurazawa Round Trip Pre-Tournament 32:28:42 h43
08.04 150km JPN6th Lake Biwa Kaizu Sakura Maranic - 150 km 25:48:00 h17
11.03 200km JPN13th Little Edo Oedo 200k 35:25:21 h202
05.02 100km JPN2nd Amami yori yori Run 15:11:24 h47
28.01 100mi JPN2nd Okinawa 58 runs 100miles 24:19:31 h20
08.01 100km JPN6th Yakushima Ultramarathon 100 km 14:47:10 h82
2022
20.11 320km JPN16th Nagasaki Tachibana Gulf Coast Super Maranic 320 2d 10:59:46 h25
04.11 250km JPN3rd Tokyo Great Race 250km 46:40:02 h35
29.10 170km JPN9th Setouchi Angya - 170 km 27:20:00 h17
15.10 150km JPN1st Yagurazawa Round Trip Pre-Tournament 31:38:09 h73
18.06 159km JPN3rd Nikko Sennin Concentric Highway Journey Run 28:57:00 h44
12.06 84.39km JPN6th JAL Mukatsuku Double Marathon 11:38:41 h265
03.05 217km JPN16th Nagasaki Tachibana Gulf Coast Super Maranic 217 35:45:36 h40
09.04 150km JPN5th Lake Biwa Kaizu Sakura Maranic - 150 km 26:12:00 h15
02.04 155km JPN2nd Tone River Run Up Journey Run Downstream 26:11:00 h49
12.03 200km JPN12th Little Edo Oedo 200k 34:08:08 h128
26.02 93km JPN2nd Nihondaira and Suruganokuni Ultra Run 16:18:44 h6
2021
26.11 103km JPN1st Tachibana Bay 273 Autumn Shimabara 15:25:32 h58
14.11 47.2km JPN2nd Miyagi Yumeguri Ultra Run 7:10:00 h63
06.11 230km JPN8th Setouchi Angya 2021 - 230 km 36:52:00 h17
09.10 200km JPN5th Santo Ultra Maranic - Santo Course 35:40:00 h12
07.08 120km JPN1st Tachibana Bay 273 Summer Challenge 20:06:23 h24
17.07 117km JPN1st Nakasendo Ultra 28:57:00 h46
27.02 200km JPN11th Little Edo Oedo 200k 34:48:56 h152
2020
17.10 100km JPN3rd Nakasendo to Kisoji Ultra Run 19:57:08 h6
20.09 80km JPN6th Nishi Seto Expressway Ultra Run 11:38:09 h9
11.09 199km JPN20th Taiyou No Michi 200km 40:18:00 h9
22.02 206km JPN10th Little Edo Oedo 205k 35:14:03 h212
12.01 100km JPN5th Yakushima Ultramarathon 100 km 15:46:22 h230
2019
07.12 80km JPN4th Santo Ultra Maranic - Hanshin Course 11:58:00 h14
01.11 276km JPNTachibana Bay Coast 273 Ultra Marathon 2d 06:43:05 h42
07.10 100km JPN1st Fuji 4 Lakes 100 km Autumn Challenge 13:44:21 h460
14.09 251km JPN2nd Utsukushima Fukushima Journey Run 250K 2d 01:47:38 h71
13.07 263km JPN4th Michinoku Tsugaru Journey Run 263K 2d 02:57:47 h130
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 12:48:22 h2070
15.06 161.6km JPN1st Nikko Sennin Concentric Journey Run 28:52:59 h97
09.06 100km JPN8th Hida Takayama 100 km Ultramarathon 13:50:17 h1761
25.05 100km JPN3rd Tsukuba Rinrin Road 100km 17:34:00 h25
23.02 204km JPN9th Little Edo Oedo 200k 35:32:20 h236
26.01 200km/3stages JPNOkinawa Hontō 3 days stage race 30:06:22 h30
13.01 100km JPN4th Yakushima Ultramarathon 15:07:32 h129
2018
01.12 200km JPN3rd Santo Ultra Maranic - Santo Course 35:03:00 h15
10.11 100km JPN6th Sun-In Future 100 km 16:51:00 h14
14.07 263km JPN3rd Michinoku Tsugaru Journey Run 263K 2d 02:47:47 h98
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 12:43:02 h2008
10.06 100km JPN7th Hida Takayama 100 km Ultramarathon 13:43:23 h1342
03.06 100km JPN1st Nanto 100 km Ultramarathon 13:51:42 h132
03.03 204km JPN8th Little Edo Oedo 200k 35:00:37 h186
14.01 100km JPN3rd Yakushima Ultramarathon 15:09:30 h75
2017
02.12 200km JPN2nd Santo Ultra Maranic - Santo Course 35:26:00 h18
03.11 105km JPNTachibana Bay Coast 105 Ultra Marathon 16:19:32 h111
15.07 250km JPN2nd Michinoku Tsugaru Journey Run 250K 47:47:39 h56
02.07 100km JPN1st Nikko 100km Ultramarathon 13:45:14 h963
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 12:37:35 h1731
11.06 100km JPN6th Hida Takayama 100 km Ultramarathon 13:42:19 h1348
02.05 250km JPN29. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 47:29:04 h227
04.03 204km JPN7th Little Edo Oedo 200k 33:43:50 h146
08.01 100km JPN2nd Yakushima Ultramarathon 15:43:00 h114
2016
04.11 103km JPNTachibana Bay Coast 100 Ultra Marathon 16:06:27 h146
09.10 100km JPN11th Echigo Kubikino 100km Ultramarathon 13:03:47 h986
11.09 50km JPN1st Koyasan and Ryujin-Onsen 50 km Ultra Marathon 6:38:22 h364
17.07 200km JPN1st Michinoku Tsugaru Journey Run 200K 37:52:21 h102
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 12:30:04 h1996
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 13:30:47 h1009
02.05 250km JPN28. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 45:46:30 h157
05.03 204km JPN6th Little Edo Oedo 200k 34:21:50 h141
2015
14.11 100km JPN4th Sun-In Future 100 km 19:58:00 h31
10.10 100km JPN17th Yukihashi to Beppu 100 km 20:08:38 h1057
04.09 106km JPN15th Taiyou No Michi 106km 20:56:00 h3 🥉
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 12:26:29 h1921
07.06 100km JPN4th Hida Takayama 100 km Ultramarathon 13:51:47 h1136
29.03 100km JPN1st Osaka Yodogawa 100 km Ultra Marathon 13:10:18 h438
28.02 203km JPN5th Little Edo Oedo 200k 35:42:02 h218
2014
22.11 60km JPN1st Kiso-Sansen 60 km Ultra-Marathon 7:17:28 h888
19.10 100km JPN20th River Shimanto 100km 13:44:28 h1073
12.10 100km JPN10th Echigo Kubikino 100km Ultramarathon 13:21:11 h1173
28.09 100km JPN17th Muraoka 100 km Ultra Marathon 13:55:00 h434
08.06 100km JPN3rd Hida Takayama 100 km Ultramarathon 13:43:19 h891
2013
29.09 50km JPN1st 50 km Ultramarathon Hakusan-Shirakawago 6:04:28 h142
15.09 100km JPN13th Tango 100 km Ultramarathon 13:08:08 h801
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 12:19:02 h1366
09.06 100km JPN2nd Hida Takayama 100 km Ultramarathon 13:32:01 h674
26.05 100km JPN20th Ebisu-Daikoku 100 km Marathon 13:06:24 h210
03.05 140km JPN25. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 22:56:35 h175
21.04 100km JPN5th 100 km Ultra Maranic Osaka 12:08:48 h149
2012
30.09 66km JPN15th Muraoka 66 km Ultra Marathon 8:40:03 h70
15.09 100km JPN1st Tojinbo 100 km Ultramarathon 14:44:09 h55
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 11:55:06 h1265
10.06 50km JPN8th Iwate Ginga 50km Marathon Challenge 5:17:16 h100
2011
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 12:42:56 h1771
03.05 140km JPN23. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 23:42:39 h194
2010
09.10 100km JPN8th Echigo Kubikino 100km Ultramarathon 13:17:27 h829
26.09 88km JPN13th Muraoka 88 km Ultra Marathon 12:29:15 h78
23.05 100km JPN2nd 100 km Ultra Maranic Osaka 12:15:00 h115
04.05 70km JPN22. Yamaguchi 100 Hagi-O-Kan Maranic 70 km 10:21:08 h99
2009
11.10 71.5km JPN17th Hasetsune Cup - Japan Mountain Endurance Race 20:57:30 h1500
27.09 88km JPN12th Muraoka 88 km Ultra Marathon 11:58:49 h54
24.05 100km JPN1st 100 km Ultra Maranic Osaka 11:56:10 h87
03.05 70km JPN17. Mukogawa Yurikamome Ultra Marathon 7:56:14 h169
2007
14.10 60km JPN13th River Shimanto 60km 7:26:14 h108