Tadao (浦川忠郎) Urakawa

Born : 1978 Cat. M45 Ultrarunner since 2013

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

Japan

36,3%

Rank quotient ?This runner's calculation uses 52 eligible race(s): Σ(rank − 1) = 5 744; Σ finishers = 15 815. 5 744 / 15 815 × 100 = 36.32%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed52

Km — ultra races2 985 km

> 100 km1

Longest race105,0 km

1st Okumusashi Long Trail Race 105K — 17/6/2023

Km per year (ultra races)

404

2022

749

2023

346

2024

162

2025

2026

Race types (share of distance)

Trail100,0%

Records

50 km6h48'20 100 km15h12'55 50 mi13h49'48

HISTORY

52 race(s)

Date		Race	Perf.	Rk
2026
24.05	65km	19th Skyline Trail Sugadaira	9:52:26 h	45
2025
20.07	99.5km	17th OSJ Ontake 100km Ultra Trail	15:12:55 h	431
25.05	62km	17th OSJ Okukuji Trail 60k	12:25:26 h	126
2024
22.12	67km	2nd Coast to Coast Boso hanto	10:28:30 h	144
01.12	50km	11th Trainic world Soto-Chichibu Trail Run 50km	9:01:38 h	82
22.09	80km	10th SkyViewTrail Memorial Cup	14:09:42 h	56
25.08	48km	11th Tsukuba Renjyo 48 km Road & Trail Run	7:26:18 h	105
12.05	51km	5th FunTrails Round Minano	8:04:24 h	136
28.04	50km	17th Ishioka Trail Run	6:48:20 h	62
2023
03.12	51.4km	11th Trainic world Ogose-Tokigawa Trail Run 50km	8:01:55 h	68
05.11	68km	7th Koshu Alps Haute Route Challenge	14:08:59 h	88
08.10	71.5km	31th Hasetsune Cup - Japan Mountain Endurance Race	12:51:31 h	303
01.10	52km	10th Trainic world Soto-Chichibu Trail Run 50km	8:13:16 h	24
23.09	80km	9th SkyViewTrail Memorial Cup	13:49:48 h	42
27.08	48km	10th Tsukuba Renjyo 48 km Road & Trail Run	7:20:00 h	130
06.08	50km	1st Mount Akagi Trail Running Race	8:44:13 h	72
16.07	65km	14th Nozawa Onsen 4100D Mountain Trail	11:32:48 h	104
17.06	105km	1st Okumusashi Long Trail Race 105K	29:00:01 h	83
28.05	62km	15th OSJ Okukuji Trail 60k	14:02:33 h	144
14.05	51km	4th FunTrails Round Minano	7:45:28 h	78
06.05	45km	2nd Karuizawa Trail Running Race	7:08:50 h	80
2022
06.11	50km	6th Koshu Alps Lily Route Challenge	8:58:32 h	37
30.10	49.6km	10th Trainic world Ogose-Tokigawa Trail Run 50km	7:43:44 h	52
02.10	52km	9th Trainic world Soto-Chichibu Trail Run 50km	7:41:54 h	18
04.09	50km	11th Hakuba Int. Trail Run	7:51:16 h	137
28.08	48km	9th Tsukuba Renjyo 48 km Road & Trail Run	6:45:00 h	34
26.06	51km	3rd FunTrails Round Minano	8:17:13 h	55
12.06	53km	4th Yuzawa Sky Extreme Trail	10:05:34 h	45
29.04	50km	15th Ishioka Trail Run	7:06:46 h	109
2021
07.11	50km	5th Koshu Alps Lily Route Challenge	10:58:33 h	112
2019
03.11	50km	3rd Koshu Alps Lily Route Challenge	9:35:11 h	48
25.08	48km	6th Tsukuba Renjyo 48 km Road & Trail Run	6:39:55 h	85
13.07	65km	10th Nozawa Onsen 4100D Mountain Trail	11:17:25 h	114
28.04	49km	12th Ishioka Trail Run	5:34:23 h	39
2018
04.11	50km	2nd Koshu Alps Lily Route Challenge	9:18:34 h	61
07.10	71.5km	26th Hasetsune Cup - Japan Mountain Endurance Race	17:50:40 h	703
22.09	75km	5th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	14:13:00 h	48
08.09	49.8km	6th Trainic world Soto-Chichibu Trail Run 50km	9:16:52 h	141
14.07	65km	9th Nozawa Onsen 4100D Mountain Trail	11:11:59 h	40
08.07	49.6km	7th Trainic world Ogose-Tokigawa Trail Run 50km	8:01:02 h	84
2017
19.11	47km	1st Koshu Alps Lily Route Challenge	8:23:29 h	27
23.09	75km	4th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	15:59:29 h	66
03.09	49.6km	6th Trainic world Ogose-Tokigawa Trail Run 50km	8:19:49 h	125
09.07	49.8km	5th Trainic world Chichibu Trail Run 50km	8:16:34 h	36
27.05	50km	9th OSJ Okukuji Trail 50k	11:33:37 h	131
2016
10.07	49.6km	5th Trainic world Ogose-Tokigawa Trail Run 50km	8:09:20 h	47
12.06	50km	3rd Trainic world Hanno-Ogose Trail Run 50km	9:25:30 h	66
08.05	49.8km	4th Trainic world Chichibu Trail Run 50km	8:17:27 h	99
2015
06.09	49.6km	4th Trainic world Ogose-Tokigawa Trail Run 50km	8:36:20 h	169
12.07	50.5km	2nd Trainic world Hanno-Ogose Trail Run 50km	10:32:24 h	58
2014
20.09	66km	1st SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	16:14:20 h	442
2013
29.09	50km	3rd SkyView Ultra-Trail	9:04:13 h	165

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	17/6/2023	1st Okumusashi Long Trail Race 105K	105,00	×2
✓ 2	20/7/2025	17th OSJ Ontake 100km Ultra Trail	99,50	×2
✓ 3	22/9/2024	10th SkyViewTrail Memorial Cup	80,00	×1
✓ 4	23/9/2023	9th SkyViewTrail Memorial Cup	80,00	×1
✓ 5	22/9/2018	5th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	75,00	×1
✓ 6	23/9/2017	4th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	75,00	×1
✓ 7	8/10/2023	31th Hasetsune Cup - Japan Mountain Endurance Race	71,50	×1
✓ 8	7/10/2018	26th Hasetsune Cup - Japan Mountain Endurance Race	71,50	×1
✓ 9	5/11/2023	7th Koshu Alps Haute Route Challenge	68,00	×1
✓ 10	22/12/2024	2nd Coast to Coast Boso hanto	67,00	×1
✓ 11	20/9/2014	1st SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup	66,00	×1
✓ 12	24/5/2026	19th Skyline Trail Sugadaira	65,00	×1
✓ 13	16/7/2023	14th Nozawa Onsen 4100D Mountain Trail	65,00	×1
✓ 14	13/7/2019	10th Nozawa Onsen 4100D Mountain Trail	65,00	×1
✓ 15	14/7/2018	9th Nozawa Onsen 4100D Mountain Trail	65,00	×1
✓ 16	25/5/2025	17th OSJ Okukuji Trail 60k	62,00	×1
✓ 17	28/5/2023	15th OSJ Okukuji Trail 60k	62,00	×1
✓ 18	12/6/2022	4th Yuzawa Sky Extreme Trail	53,00	×1
✓ 19	1/10/2023	10th Trainic world Soto-Chichibu Trail Run 50km	52,00	×1
✓ 20	2/10/2022	9th Trainic world Soto-Chichibu Trail Run 50km	52,00	×1
✓ 21	3/12/2023	11th Trainic world Ogose-Tokigawa Trail Run 50km	51,40	×1
✓ 22	12/5/2024	5th FunTrails Round Minano	51,00	×1
✓ 23	14/5/2023	4th FunTrails Round Minano	51,00	×1
✓ 24	26/6/2022	3rd FunTrails Round Minano	51,00	×1
✓ 25	12/7/2015	2nd Trainic world Hanno-Ogose Trail Run 50km	50,50	×1
✓ 26	1/12/2024	11th Trainic world Soto-Chichibu Trail Run 50km	50,00	×1
✓ 27	28/4/2024	17th Ishioka Trail Run	50,00	×1
✓ 28	6/8/2023	1st Mount Akagi Trail Running Race	50,00	×1
✓ 29	6/11/2022	6th Koshu Alps Lily Route Challenge	50,00	×1
✓ 30	4/9/2022	11th Hakuba Int. Trail Run	50,00	×1
✓ 31	29/4/2022	15th Ishioka Trail Run	50,00	×1
✓ 32	7/11/2021	5th Koshu Alps Lily Route Challenge	50,00	×1
✓ 33	3/11/2019	3rd Koshu Alps Lily Route Challenge	50,00	×1
✓ 34	4/11/2018	2nd Koshu Alps Lily Route Challenge	50,00	×1
✓ 35	27/5/2017	9th OSJ Okukuji Trail 50k	50,00	×1
✓ 36	12/6/2016	3rd Trainic world Hanno-Ogose Trail Run 50km	50,00	×1
✓ 37	29/9/2013	3rd SkyView Ultra-Trail	50,00	×1
✓ 38	8/9/2018	6th Trainic world Soto-Chichibu Trail Run 50km	49,80	×1
✓ 39	9/7/2017	5th Trainic world Chichibu Trail Run 50km	49,80	×1
✓ 40	8/5/2016	4th Trainic world Chichibu Trail Run 50km	49,80	×1
✓ 41	30/10/2022	10th Trainic world Ogose-Tokigawa Trail Run 50km	49,60	×1
✓ 42	8/7/2018	7th Trainic world Ogose-Tokigawa Trail Run 50km	49,60	×1
✓ 43	3/9/2017	6th Trainic world Ogose-Tokigawa Trail Run 50km	49,60	×1
✓ 44	10/7/2016	5th Trainic world Ogose-Tokigawa Trail Run 50km	49,60	×1
✓ 45	6/9/2015	4th Trainic world Ogose-Tokigawa Trail Run 50km	49,60	×1
✓ 46	28/4/2019	12th Ishioka Trail Run	49,00	×1
✓ 47	25/8/2024	11th Tsukuba Renjyo 48 km Road & Trail Run	48,00	×1
✓ 48	27/8/2023	10th Tsukuba Renjyo 48 km Road & Trail Run	48,00	×1
49	28/8/2022	9th Tsukuba Renjyo 48 km Road & Trail Run	48,00	×1
50	25/8/2019	6th Tsukuba Renjyo 48 km Road & Trail Run	48,00	×1
51	19/11/2017	1st Koshu Alps Lily Route Challenge	47,00	—
52	6/5/2023	2nd Karuizawa Trail Running Race	45,00	—