Nao (内田尚) Uchida

Born : 1965 Cat. M60 Ultrarunner since 1999

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

32,0%

Rank quotient ?This runner's calculation uses 84 eligible race(s): Σ(rank − 1) = 15 668; Σ finishers = 49 017. 15 668 / 49 017 × 100 = 31.96%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed84

Km — ultra races7 648 km

> 100 km5

> 160 km4

> 200 km2

> 24h2

Longest race250,0 km

16. Yamaguchi 100 Hagi-O-Kan Maranic 250 km — 2/5/2004

Km per year (ultra races)

316

2022

366

2023

216

2024

170

2025

270

2026

Race types (share of distance)

Road79,3%

Trail20,7%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km4h18'05 100 km8h50'08 6 h63,80 km 24 h175,92 km

HISTORY

84 race(s)

Date		Race	Perf.	Rk
2026
03.05	70km	34. Mukogawa Yurikamome Ultra Marathon	8:03:34 h	225
19.04	100km	17th 100 km Ultra Maranic Osaka	12:43:37 h	131
19.04	100km	36th Fuji 4 Lakes 100 km Challenge	13:45:43 h	1306
2025
19.10	100km	31th River Shimanto 100km	13:54:00 h	949
03.05	70km	33. Mukogawa Yurikamome Ultra Marathon	8:10:51 h	246
2024
20.10	100km	30th River Shimanto 100km	13:55:52 h	1170
17.08	6h	24th 6-hour relay & solo marathon Kobe	45.900 km	22
03.05	70km	32. Mukogawa Yurikamome Ultra Marathon	8:23:34 h	258
2023
15.10	100km	29th River Shimanto 100km	12:21:54 h	458
01.10	50km	17th Ashiya Hama Shiokaze Ultra Marathon - 50 km	5:23:22 h	18
19.08	6h	23th 6-hour relay & solo marathon Kobe	45.900 km	16
11.06	100km	11th Hida Takayama 100 km Ultramarathon	13:32:12 h	998
03.05	70km	31. Mukogawa Yurikamome Ultra Marathon	8:17:45 h	231
2022
18.09	100km	20th Tango 100 km Ultramarathon	13:59:26 h	618
30.07	6h	22th 6-hour relay & solo marathon Kobe	45.900 km	13
12.06	100km	10th Hida Takayama 100 km Ultramarathon	13:10:15 h	756
03.05	70km	30. Mukogawa Yurikamome Ultra Marathon	7:33:56 h	152
2018
07.10	50km	14th Ashiya Hama Shiokaze Ultra Marathon - 50 km	5:06:28 h	13
16.09	100km	18th Tango 100 km Ultramarathon	12:51:17 h	502
04.08	6h	18th 6-hour relay & solo marathon Kobe	49.300 km	10
10.06	100km	7th Hida Takayama 100 km Ultramarathon	12:24:07 h	633
03.05	70km	26. Mukogawa Yurikamome Ultra Marathon	7:38:42 h	303
2017
15.10	100km	23rd River Shimanto 100km	12:17:40 h	607
01.10	50km	13th Ashiya Hama Shiokaze Ultra Marathon - 50 km	4:55:09 h	16
05.08	6h	17th 6-hour relay & solo marathon Kobe	49.300 km	10
11.06	100km	6th Hida Takayama 100 km Ultramarathon	11:56:27 h	545
03.05	70km	25. Mukogawa Yurikamome Ultra Marathon	7:53:03 h	368
2016
02.10	50km	12th Ashiya Hama Shiokaze Ultra Marathon - 50 km	5:18:24 h	10
18.09	100km	16th Tango 100 km Ultramarathon	11:55:15 h	375
06.08	6h	16th 6-hour relay & solo marathon Kobe	51.000 km	10
12.06	100km	5th Hida Takayama 100 km Ultramarathon	11:52:57 h	410
03.05	70km	24. Mukogawa Yurikamome Ultra Marathon	7:15:15 h	233
2015
18.10	100km	21st River Shimanto 100km	10:29:58 h	173
20.09	100km	15th Tango 100 km Ultramarathon	11:02:13 h	271
01.08	6h	15th 6-hour relay & solo marathon Kobe	52.700 km	9
07.06	100km	4th Hida Takayama 100 km Ultramarathon	11:29:56 h	260
03.05	70km	23. Mukogawa Yurikamome Ultra Marathon	6:55:22 h	156
2014
28.09	100km	17th Muraoka 100 km Ultra Marathon	11:45:57 h	99
14.09	100km	14th Tango 100 km Ultramarathon	11:41:48 h	394
08.06	100km	3rd Hida Takayama 100 km Ultramarathon	11:14:45 h	217
03.05	70km	22. Mukogawa Yurikamome Ultra Marathon	7:12:36 h	162
2013
13.10	50km	9th Ashiya Hama Shiokaze Ultra Marathon - 50 km	4:18:05 h	8
29.09	66km	16th Muraoka 66 km Ultra Marathon	7:23:20 h	34
15.09	100km	13th Tango 100 km Ultramarathon	11:05:04 h	225
03.08	6h	14th 6-hour relay & solo marathon Kobe	60.000 km	6
13.07	6h	2nd 6-hour relay & solo marathon Mimasaka	52.700 km	3 🥉
03.05	70km	21. Mukogawa Yurikamome Ultra Marathon	6:49:17 h	181
2012
21.10	100km	18th River Shimanto 100km	9:48:39 h	91
07.10	50km	8th Ashiya Hama Shiokaze Ultra Marathon - 50 km	4:19:15 h	11
21.09	100km	12th Tango 100 km Ultramarathon	11:55:37 h	204
04.08	6h	13th 6-hour relay & solo marathon Kobe	63.800 km	7
03.05	70km	20. Mukogawa Yurikamome Ultra Marathon	6:50:38 h	117
2011
18.09	100km	11th Tango 100 km Ultramarathon	10:56:04 h	119
03.05	70km	19. Mukogawa Yurikamome Ultra Marathon	6:42:08 h	94
2009
20.09	100km	9th Tango 100 km Ultramarathon	10:01:35 h	80
28.06	100km	9th Nichinan Orochi 100 km Marathon	9:43:33 h	24
03.05	70km	17. Mukogawa Yurikamome Ultra Marathon	6:19:52 h	39
2008
19.10	100km	14th River Shimanto 100km	9:22:02 h	57
04.10	24h	11. Hiratsuka 24 hour race	175.924 km	8
14.09	100km	8th Tango 100 km Ultramarathon	9:54:06 h	46
05.07	24h	3rd Jingu Gaien 24 Hour Challenge	169.728 km	18
22.06	100km	8th Nichinan Orochi 100 km Marathon	9:33:25 h	22
2007
14.10	100km	13th River Shimanto 100km	9:20:25 h	50
29.09	100km	10th Muraoka 100 km Ultra Marathon	10:38:54 h	24
16.09	100km	7th Tango 100 km Ultramarathon	9:55:49 h	33
24.06	100km	7th Nichinan Orochi 100 km Marathon	10:05:21 h	45
2006
15.10	100km	12th River Shimanto 100km	9:11:51 h	46
30.09	100km	9th Muraoka 100 km Ultra Marathon	10:28:09 h	15
17.09	100km	6th Tango 100 km Ultramarathon	9:35:07 h	38
25.06	100km	6th Nichinan Orochi 100 km Marathon	9:14:41 h	21
2005
16.10	100km	11th River Shimanto 100km	9:05:04 h	42
18.09	100km	5th Tango 100 km Ultramarathon	10:07:47 h	28
26.06	100km	5th Nichinan Orochi 100 km Marathon	9:16:01 h	18
2004
17.10	100km	10th River Shimanto 100km	8:50:08 h	45
19.09	100km	4th Tango 100 km Ultramarathon	9:43:08 h	27
20.06	100km	4th Nichinan Orochi 100 km Marathon	9:43:40 h	25
02.05	250km	16. Yamaguchi 100 Hagi-O-Kan Maranic 250 km	43:47:32 h	49
2003
19.10	100km	9th River Shimanto 100km	9:28:39 h	68
23.09	100km	6th Muraoka 100 km Ultra Marathon	10:55:42 h	17
02.05	250km	15. Yamaguchi 100 Hagi-O-Kan Maranic 250 km	46:05:59 h	97
2002
03.05	140km	14. Yamaguchi 100 Hagi-O-Kan Maranic 140 km	20:51:31 h	9
2001
21.10	100km	8th River Shimanto 100km	9:35:02 h	64
2000
15.10	100km	7th River Shimanto 100km	10:05:09 h	100
1999
17.10	100km	6th River Shimanto 100km	10:13:23 h	144

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	2/5/2004	16. Yamaguchi 100 Hagi-O-Kan Maranic 250 km	250,00	×3
✓ 2	2/5/2003	15. Yamaguchi 100 Hagi-O-Kan Maranic 250 km	250,00	×3
✓ 3	4/10/2008	11. Hiratsuka 24 hour race	175,92	×2
✓ 4	5/7/2008	3rd Jingu Gaien 24 Hour Challenge	169,73	×2
✓ 5	3/5/2002	14. Yamaguchi 100 Hagi-O-Kan Maranic 140 km	140,00	×2
✓ 6	19/4/2026	17th 100 km Ultra Maranic Osaka	100,00	×1
✓ 7	19/10/2025	31th River Shimanto 100km	100,00	×1
✓ 8	20/10/2024	30th River Shimanto 100km	100,00	×1
✓ 9	15/10/2023	29th River Shimanto 100km	100,00	×1
✓ 10	11/6/2023	11th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 11	18/9/2022	20th Tango 100 km Ultramarathon	100,00	×1
✓ 12	12/6/2022	10th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 13	16/9/2018	18th Tango 100 km Ultramarathon	100,00	×1
✓ 14	10/6/2018	7th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 15	15/10/2017	23rd River Shimanto 100km	100,00	×1
✓ 16	11/6/2017	6th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 17	18/9/2016	16th Tango 100 km Ultramarathon	100,00	×1
✓ 18	12/6/2016	5th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 19	18/10/2015	21st River Shimanto 100km	100,00	×1
✓ 20	20/9/2015	15th Tango 100 km Ultramarathon	100,00	×1
✓ 21	7/6/2015	4th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 22	28/9/2014	17th Muraoka 100 km Ultra Marathon	100,00	×1
✓ 23	14/9/2014	14th Tango 100 km Ultramarathon	100,00	×1
✓ 24	8/6/2014	3rd Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 25	15/9/2013	13th Tango 100 km Ultramarathon	100,00	×1
✓ 26	21/10/2012	18th River Shimanto 100km	100,00	×1
✓ 27	21/9/2012	12th Tango 100 km Ultramarathon	100,00	×1
✓ 28	18/9/2011	11th Tango 100 km Ultramarathon	100,00	×1
✓ 29	20/9/2009	9th Tango 100 km Ultramarathon	100,00	×1
✓ 30	28/6/2009	9th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 31	19/10/2008	14th River Shimanto 100km	100,00	×1
✓ 32	14/9/2008	8th Tango 100 km Ultramarathon	100,00	×1
✓ 33	22/6/2008	8th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 34	14/10/2007	13th River Shimanto 100km	100,00	×1
✓ 35	29/9/2007	10th Muraoka 100 km Ultra Marathon	100,00	×1
✓ 36	16/9/2007	7th Tango 100 km Ultramarathon	100,00	×1
✓ 37	24/6/2007	7th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 38	15/10/2006	12th River Shimanto 100km	100,00	×1
✓ 39	30/9/2006	9th Muraoka 100 km Ultra Marathon	100,00	×1
✓ 40	17/9/2006	6th Tango 100 km Ultramarathon	100,00	×1
✓ 41	25/6/2006	6th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 42	16/10/2005	11th River Shimanto 100km	100,00	×1
✓ 43	18/9/2005	5th Tango 100 km Ultramarathon	100,00	×1
✓ 44	26/6/2005	5th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 45	17/10/2004	10th River Shimanto 100km	100,00	×1
✓ 46	19/9/2004	4th Tango 100 km Ultramarathon	100,00	×1
✓ 47	20/6/2004	4th Nichinan Orochi 100 km Marathon	100,00	×1
✓ 48	19/10/2003	9th River Shimanto 100km	100,00	×1
✓ 49	23/9/2003	6th Muraoka 100 km Ultra Marathon	100,00	×1
✓ 50	21/10/2001	8th River Shimanto 100km	100,00	×1
✓ 51	15/10/2000	7th River Shimanto 100km	100,00	×1
✓ 52	17/10/1999	6th River Shimanto 100km	100,00	×1
✓ 53	3/5/2026	34. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 54	3/5/2025	33. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 55	3/5/2024	32. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 56	3/5/2023	31. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 57	3/5/2022	30. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 58	3/5/2018	26. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 59	3/5/2017	25. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 60	3/5/2016	24. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 61	3/5/2015	23. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 62	3/5/2014	22. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 63	3/5/2013	21. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 64	3/5/2012	20. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 65	3/5/2011	19. Mukogawa Yurikamome Ultra Marathon	70,00	×1
✓ 66	3/5/2009	17. Mukogawa Yurikamome Ultra Marathon	70,00	×1
67	29/9/2013	16th Muraoka 66 km Ultra Marathon	66,00	—
68	4/8/2012	13th 6-hour relay & solo marathon Kobe	63,80	—
69	3/8/2013	14th 6-hour relay & solo marathon Kobe	60,00	—
70	1/8/2015	15th 6-hour relay & solo marathon Kobe	52,70	—
71	13/7/2013	2nd 6-hour relay & solo marathon Mimasaka	52,70	—
72	6/8/2016	16th 6-hour relay & solo marathon Kobe	51,00	—
73	1/10/2023	17th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
74	7/10/2018	14th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
75	1/10/2017	13th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
76	2/10/2016	12th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
77	13/10/2013	9th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
78	7/10/2012	8th Ashiya Hama Shiokaze Ultra Marathon - 50 km	50,00	—
79	4/8/2018	18th 6-hour relay & solo marathon Kobe	49,30	—
80	5/8/2017	17th 6-hour relay & solo marathon Kobe	49,30	—
81	17/8/2024	24th 6-hour relay & solo marathon Kobe	45,90	—
82	19/8/2023	23th 6-hour relay & solo marathon Kobe	45,90	—
83	30/7/2022	22th 6-hour relay & solo marathon Kobe	45,90	—