Tomohiro (渡辺友洋) Watanabe

Born : 1978 Cat. M45 Ultrarunner since 2015

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

21,6%

Rank quotient ?This runner's calculation uses 69 eligible race(s): Σ(rank − 1) = 4 634; Σ finishers = 21 443. 4 634 / 21 443 × 100 = 21.61%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed74

Km — ultra races12 152 km

> 100 km37

> 160 km25

> 200 km19

> 24h10

> 48h4

Longest race672,7 km

3rd Hirosaki 6days Ultra Run — 20/5/2024

Km per year (ultra races)

1 223

2022

1 645

2023

2 122

2024

1 065

2025

875

2026

Race types (share of distance)

Road94,4%

Stage5,6%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 30

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

100 km9h57'01 50 mi10h26'00 24 h190,89 km 48 h300,59 km 6 d672,69 km

HISTORY

69 race(s) · 8 stage(s) nested · 4 split(s) nested

Date		Race	Perf.	Rk
2026
30.04	516km	21st River Road Foot Race 516 km	5d 05:15:26 h	39
11.04	8h	21st Toda Saiko 8 Hours	50.000 km	127
28.03	24h	17th Jingu Gaien 24 Hour Challenge	170.917 km	29
14–15.03	138km/2stages	14th Arakawa Riverside Journey	16:44:51 h	12
14.03	84km	14th Arakawa Riverside Journey - Stage 1	9:53:02 h	24
15.03	54km	14th Arakawa Riverside Journey - Stage 2	6:51:49 h	19
2025
19.10	70km	32. Ultramarathon Okumusashi	7:31:09 h	78
19.07	266km	9th Michinoku Tsugaru Journey Run 266K	2d 04:44:55 h	50
23.05	6d	4th Hirosaki 6days Ultra Run	565.097 km	23
08.03	24h	16th Jingu Gaien 24 Hour Challenge	164.204 km	45
08.03	6h	16th Jingu Gaien 24 Hour Challenge - 6h Split	52.982 km	76
08.03	12h	16th Jingu Gaien 24 Hour Challenge -12h Split	96.693 km	57
2024
02.11	142km	6th Autumn leaves in Okumusashi / Chichibu Journey run	19:37:48 h	12
20.10	70km	31. Ultramarathon Okumusashi	7:03:10 h	67
14.09	250km	7th Utsukushima Fukushima Journey Run 250K	2d 00:41:10 h	43
13.07	266km	8th Michinoku Tsugaru Journey Run 266K	2d 03:48:25 h	63
20.05	6d	3rd Hirosaki 6days Ultra Run	672.686 km	7
30.04	514km	19th River Road Foot Race 514 km	5d 11:21:08 h	80
13.04	71km	19th Toda Saiko 70 km	7:52:53 h	90
16–17.03	136km/2stages	12th Arakawa Riverside Journey Stage Race	16:02:05 h	11
16.03	82km	12th Arakawa Riverside Journey Stage Race - Stage 1	9:23:38 h	16
17.03	54.2km	12th Arakawa Riverside Journey Stage Race - Stage 2	6:38:27 h	24
2023
28.10	147km	5th Autumn leaves in Okumusashi / Chichibu Journey run	21:33:36 h	41
15.07	266km	7th Michinoku Tsugaru Journey Run 263K	2d 02:55:58 h	54
02.07	8h	29th 8-Hour Endurance Race Tokorozawa - 3 tai	78.400 km	7
04.06	78km	30. Ultramarathon Okumusashi	8:50:01 h	186
26.05	48h	2nd Hirosaki 48h Ultra Run	300.586 km	4
30.04	513km	18th River Road Foot Race 513 km	5d 01:58:32 h	36
08.04	71km	18th Toda Saiko 70 km	6:33:17 h	28
11.03	24h	15th Jingu Gaien 24 Hour Challenge	190.888 km	31
11.03	6h	15th Jingu Gaien 24 Hour Challenge - 6h Split	51.636 km	71
11.03	12h	15th Jingu Gaien 24 Hour Challenge -12h Split	99.300 km	56
2022
09.10	100km	14th Echigo Kubikino 100km Ultramarathon	9:57:01 h	70
17.09	251km	5th Utsukushima Fukushima Journey Run 251K	2d 00:38:23 h	34
16.07	266km	6th Michinoku Tsugaru Journey Run 263K	2d 02:06:04 h	61
03.07	8h	28th 8-Hour Endurance Race Tokorozawa	83.300 km	10
05.06	78km	29. Ultramarathon Okumusashi	8:24:55 h	203
21.05	48h	1st Hirosaki 48h Ultra Run	238.046 km	13
09.04	71km	17th Toda Saiko 70 km	7:07:22 h	35
21–22.03	136km/2stages	10th Arakawa Riverside Journey Stage Race	17:12:00 h	24
21.03	81.6km	10th Arakawa Riverside Journey Stage Race - Stage 1	10:05:00 h	29
22.03	55.4km	10th Arakawa Riverside Journey Stage Race - Stage 2	7:07:00 h	24
2021
30.10	146km	3rd Autumn leaves in Okumusashi / Chichibu Journey run	20:03:51 h	54
04.07	8h	27th 8-Hour Endurance Race Tokorozawa	83.300 km	42
30.04	503km	16th River Road Foot Race 503 km	5d 06:28:36 h	39
10.04	70km	16th Toda Saiko 70 km	6:53:26 h	153
03.04	80km	9th Arakawa Riverside Journey - 80 km	10:26:00 h	13
27.02	235km	11th Little Edo Oedo 235k	35:57:18 h	40
2020
24.10	146km	2nd Autumn leaves in Okumusashi / Chichibu Journey run	19:39:14 h	35
19.09	123km	3rd Utsukushima Fukushima Journey Run 123K	15:59:13 h	26
05.07	8h	26th 8-Hour Endurance Race Tokorozawa	78.400 km	37
21.03	136km/2stages	8th Arakawa Riverside Journey Stage Race	16:43:18 h	14
2019
02.11	145km	1st Autumn leaves in Okumusashi / Chichibu Journey run	22:18:28 h	67
22.09	100km	29. Akita Nairiku 100km Marathon	10:26:51 h	87
14.09	251km	2nd Utsukushima Fukushima Journey Run 250K	47:51:57 h	53
29.06	8h	25th 8-Hour Endurance Race Tokorozawa	83.300 km	30
02.06	78km	26. Ultramarathon Okumusashi	7:42:42 h	168
30.04	514km	15th River Road Foot Race 514 km	5d 02:24:08 h	45
13.04	70km	14th Toda Saiko 70 km	6:21:37 h	60
16–17.03	136km/2stages	7th Arakawa Riverside Journey Stage Race	16:13:33 h	10
16.03	80km	7th Arakawa Riverside Journey Stage Race - Stage 1	9:22:03 h	33
17.03	56km	7th Arakawa Riverside Journey Stage Race - Stage 2	6:51:30 h	19
2018
10.11	24h	13th Jingu Gaien 24 Hour Challenge	185.732 km	46
15.09	250km	1st Utsukushima Fukushima Journey Run 250K	2d 01:55:43 h	50
14.07	263km	3rd Michinoku Tsugaru Journey Run 263K	2d 01:48:02 h	74
30.06	8h	24th 8-Hour Endurance Race Tokorozawa	78.400 km	13
03.06	78km	25. Ultramarathon Okumusashi	7:43:47 h	108
14.04	70km	13th Toda Saiko 70 km	6:29:33 h	78
2017
11.11	24h	12th Jingu Gaien 24 Hour Challenge	172.221 km	61
24.09	100km	27. Akita Nairiku 100km Marathon	10:47:41 h	90
15.07	200km	2nd Michinoku Tsugaru Journey Run 200K	38:29:28 h	65
02.07	8h	23th 8-Hour Endurance Race Tokorozawa - 3 tai	77.904 km	9
10.06	24h	16. Green Charity Marathon Tokyo - Hard Run 24H	154.119 km	20
04.06	78km	24. Ultramarathon Okumusashi	7:50:31 h	170
08.04	70km	12th Toda Saiko 70 km	6:24:37 h	66
2016
03.07	8h	22th 8-Hour Endurance Race Tokorozawa - 3 tai	71.412 km	18
05.06	78km	23. Ultramarathon Okumusashi	7:49:15 h	209
09.04	70km	11th Toda Saiko 70 km	6:57:33 h	85
2015
27.09	100km	25. Akita Nairiku 100km Marathon	11:28:36 h	221
22.06	77km	22. Ultramarathon Okumusashi	8:51:41 h	482
11.04	70km	10th Toda Saiko 70 km	7:53:19 h	252

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	20/5/2024	3rd Hirosaki 6days Ultra Run	672,69	×7
✓ 2	23/5/2025	4th Hirosaki 6days Ultra Run	565,10	×6
✓ 3	30/4/2026	21st River Road Foot Race 516 km	516,00	×5
✓ 4	30/4/2024	19th River Road Foot Race 514 km	514,00	×5
✓ 5	30/4/2019	15th River Road Foot Race 514 km	514,00	×5
✓ 6	30/4/2023	18th River Road Foot Race 513 km	513,00	×5
✓ 7	30/4/2021	16th River Road Foot Race 503 km	503,00	×5
✓ 8	26/5/2023	2nd Hirosaki 48h Ultra Run	300,59	×3
✓ 9	19/7/2025	9th Michinoku Tsugaru Journey Run 266K	266,00	×3
✓ 10	13/7/2024	8th Michinoku Tsugaru Journey Run 266K	266,00	×3
✓ 11	15/7/2023	7th Michinoku Tsugaru Journey Run 263K	266,00	×3
✓ 12	16/7/2022	6th Michinoku Tsugaru Journey Run 263K	266,00	×3
✓ 13	14/7/2018	3rd Michinoku Tsugaru Journey Run 263K	263,00	×2
✓ 14	17/9/2022	5th Utsukushima Fukushima Journey Run 251K	251,00	×2
✓ 15	14/9/2019	2nd Utsukushima Fukushima Journey Run 250K	251,00	×2
✓ 16	14/9/2024	7th Utsukushima Fukushima Journey Run 250K	250,00	×2
✓ 17	15/9/2018	1st Utsukushima Fukushima Journey Run 250K	250,00	×2
✓ 18	21/5/2022	1st Hirosaki 48h Ultra Run	238,05	×2
✓ 19	27/2/2021	11th Little Edo Oedo 235k	235,00	×2
✓ 20	15/7/2017	2nd Michinoku Tsugaru Journey Run 200K	200,00	×2
✓ 21	11/3/2023	15th Jingu Gaien 24 Hour Challenge	190,89	×2
✓ 22	10/11/2018	13th Jingu Gaien 24 Hour Challenge	185,73	×2
✓ 23	11/11/2017	12th Jingu Gaien 24 Hour Challenge	172,22	×1
✓ 24	28/3/2026	17th Jingu Gaien 24 Hour Challenge	170,92	×1
✓ 25	8/3/2025	16th Jingu Gaien 24 Hour Challenge	164,20	×1
✓ 26	10/6/2017	16. Green Charity Marathon Tokyo - Hard Run 24H	154,12	×1
✓ 27	28/10/2023	5th Autumn leaves in Okumusashi / Chichibu Journey run	147,00	×1
✓ 28	30/10/2021	3rd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 29	24/10/2020	2nd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 30	2/11/2019	1st Autumn leaves in Okumusashi / Chichibu Journey run	145,00	×1
✓ 31	2/11/2024	6th Autumn leaves in Okumusashi / Chichibu Journey run	142,00	×1
✓ 32	14/3/2026	14th Arakawa Riverside Journey	138,00	×1
✓ 33	16/3/2024	12th Arakawa Riverside Journey Stage Race	136,00	×1
✓ 34	21/3/2022	10th Arakawa Riverside Journey Stage Race	136,00	×1
✓ 35	21/3/2020	8th Arakawa Riverside Journey Stage Race	136,00	×1
✓ 36	16/3/2019	7th Arakawa Riverside Journey Stage Race	136,00	×1
✓ 37	19/9/2020	3rd Utsukushima Fukushima Journey Run 123K	123,00	×1
✓ 38	9/10/2022	14th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 39	22/9/2019	29. Akita Nairiku 100km Marathon	100,00	×1
✓ 40	24/9/2017	27. Akita Nairiku 100km Marathon	100,00	×1
✓ 41	27/9/2015	25. Akita Nairiku 100km Marathon	100,00	×1
✓ 42	3/7/2022	28th 8-Hour Endurance Race Tokorozawa	83,30	—
✓ 43	4/7/2021	27th 8-Hour Endurance Race Tokorozawa	83,30	—
✓ 44	29/6/2019	25th 8-Hour Endurance Race Tokorozawa	83,30	—
✓ 45	3/4/2021	9th Arakawa Riverside Journey - 80 km	80,00	—
✓ 46	2/7/2023	29th 8-Hour Endurance Race Tokorozawa - 3 tai	78,40	—
✓ 47	5/7/2020	26th 8-Hour Endurance Race Tokorozawa	78,40	—
✓ 48	30/6/2018	24th 8-Hour Endurance Race Tokorozawa	78,40	—
✓ 49	4/6/2023	30. Ultramarathon Okumusashi	78,00	—
✓ 50	5/6/2022	29. Ultramarathon Okumusashi	78,00	—
✓ 51	2/6/2019	26. Ultramarathon Okumusashi	78,00	—
✓ 52	3/6/2018	25. Ultramarathon Okumusashi	78,00	—
✓ 53	4/6/2017	24. Ultramarathon Okumusashi	78,00	—
✓ 54	5/6/2016	23. Ultramarathon Okumusashi	78,00	—
✓ 55	2/7/2017	23th 8-Hour Endurance Race Tokorozawa - 3 tai	77,90	—
✓ 56	22/6/2015	22. Ultramarathon Okumusashi	77,00	—
✓ 57	3/7/2016	22th 8-Hour Endurance Race Tokorozawa - 3 tai	71,41	—
✓ 58	13/4/2024	19th Toda Saiko 70 km	71,00	—
✓ 59	8/4/2023	18th Toda Saiko 70 km	71,00	—
✓ 60	9/4/2022	17th Toda Saiko 70 km	71,00	—
✓ 61	19/10/2025	32. Ultramarathon Okumusashi	70,00	—
✓ 62	20/10/2024	31. Ultramarathon Okumusashi	70,00	—
✓ 63	10/4/2021	16th Toda Saiko 70 km	70,00	—
✓ 64	13/4/2019	14th Toda Saiko 70 km	70,00	—
✓ 65	14/4/2018	13th Toda Saiko 70 km	70,00	—
✓ 66	8/4/2017	12th Toda Saiko 70 km	70,00	—
✓ 67	9/4/2016	11th Toda Saiko 70 km	70,00	—
✓ 68	11/4/2015	10th Toda Saiko 70 km	70,00	—
69	11/4/2026	21st Toda Saiko 8 Hours	50,00	—