Toshiyuki (池端敏行) Ikehata

Born : 1962 Cat. M60 Ultrarunner since 2005

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

58,7%

Rank quotient ?This runner's calculation uses 66 eligible race(s): Σ(rank − 1) = 22 032; Σ finishers = 37 541. 22 032 / 37 541 × 100 = 58.69%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed66

Km — ultra races6 616 km

> 100 km12

> 160 km3

> 200 km1

Longest race276,0 km

19th Nagasaki Tachibana Gulf Coast Super Maranic 276 — 22/11/2025

Km per year (ultra races)

433

2022

711

2023

673

2024

991

2025

584

2026

Race types (share of distance)

Road84,0%

Trail16,0%

Records

50 km5h53'04 100 km11h22'48 50 mi11h18'30

HISTORY

66 race(s)

Date		Race	Perf.	Rk
2026
14.06	84.39km	10th JAL Mukatsuku Double Marathon	10:57:19 h	203
31.05	100km	2nd Shimanami Surround 100km	13:41:39 h	49
26.04	100km	2nd Suo-Oshima Ultramarathon	13:26:40 h	126
19.04	100km	26. Okukumano 100 km Ultramarathon	12:34:59 h	150
01.02	100km	5th Amami yori yori Run	13:00:30 h	11
24.01	100km	36th Miyako 100 km Ultramarathon	11:34:52 h	71
2025
14.12	100km	6th Tobishima Ultra Marathon	13:23:53 h	131
22.11	276km	19th Nagasaki Tachibana Gulf Coast Super Maranic 276	2d 06:31:16 h	7
18.10	100km	8th Iki 100 km Ultra Marathon	12:55:52 h	197
08.06	100km	13th Hida Takayama 100 km Ultramarathon	13:07:14 h	945
25.05	100km	31th Ebisu-Daikoku 100 km Marathon	12:37:53 h	227
10.05	115.1km	3rd Aso Volcano Trail	26:07:37 h	387
02.02	100km	4th Amami yori yori Run	13:33:16 h	23
26.01	100km	35th Miyako 100 km Ultramarathon	11:22:48 h	38
2024
08.12	100km	5th Tobishima Ultra Marathon	12:53:54 h	132
19.10	100km	7th Iki 100 km Ultra Marathon	13:20:01 h	176
16.06	100km	17. Okinoshima 100km Ultra Marathon	13:48:46 h	195
04.05	173km	18th Nagasaki Tachibana Gulf Coast Super Maranic 173	31:54:09 h	44
21.04	100km	3rd Suo-Oshima Ultra Marathon - 100 km	13:55:46 h	146
21.01	100km	34th Miyako 100 km Ultramarathon	11:51:47 h	83
2023
10.12	100km	4th Tobishima Ultra Marathon	13:56:19 h	194
04.11	103km	17th Nagasaki Tachibana Gulf Coast Super Maranic 103	15:39:14 h	53
21.10	100km	6th Iki 100 km Ultra Marathon	12:45:09 h	186
23.07	66km	11th Kirishima Ebino-kougen Extreme Trail	12:49:53 h	264
03.05	173km	17th Nagasaki Tachibana Gulf Coast Super Maranic 173	32:45:05 h	51
22.04	69km	2nd KAI 69k	14:35:49 h	406
22.01	100km	33th Miyako 100 km Ultramarathon	12:28:55 h	78
2022
11.12	100km	3rd Tobishima Ultra Marathon	13:29:23 h	119
21.11	103km	16th Nagasaki Tachibana Gulf Coast Super Maranic 103	16:26:59 h	28
15.10	100km	5th Iki 100 km Ultra Marathon	13:23:11 h	136
21.05	50km	8th Mt. Hiei Int. 50 km Trail Run	9:22:34 h	307
04.05	80km	16th Nagasaki Tachibana Gulf Coast Super Maranic 80	11:18:30 h	64
2021
26.11	103km	1st Tachibana Bay 273 Autumn Shimabara	15:56:32 h	64
2020
19.01	100km	30th Miyako 100 km Ultramarathon	12:01:31 h	147
2019
02.11	103km	Tachibana Bay Coast 103 Ultra Marathon	16:25:40 h	107
19.10	100km	4th Iki 100 km Ultra Marathon	13:55:49 h	264
20.01	100km	29th Miyako 100 km Ultramarathon	12:51:57 h	180
2018
02.11	105km	Tachibana Bay Coast 105 Ultra Marathon	16:37:06 h	188
20.10	50km	3rd Iki 50 km Ultra Marathon	5:53:04 h	72
13.05	60km	4th Ishigaki Island Ultra Marathon	10:06:47 h	190
2017
05.03	75km	3rd Nagoura Marathon 75 km	9:06:04 h	7
2016
04.11	103km	Tachibana Bay Coast 100 Ultra Marathon	16:58:28 h	213
04.05	129km	10th Nagasaki Tachibana Gulf Coast Super Maranic 173	22:08:55 h	147
2015
19.07	65km	6th Nozawa Onsen 4100D Mountain Trail	13:38:18 h	236
14.06	100km	11th Iwate Ginga 100km Marathon Challenge	12:37:00 h	481
17.05	100km	21st Yatsugatake Nobeyama 100 km	13:26:25 h	948
15.03	72km	2nd Izu Trail Journey	12:40:04 h	683
11.01	100km	25th Miyako 100 km Ultramarathon	11:41:23 h	167
2014
20.07	65km	5th Nozawa Onsen 4100D Mountain Trail	14:13:13 h	325
12.01	100km	24th Miyako 100 km Ultramarathon	11:33:37 h	107
2013
30.06	100km road race	28. Lake Saroma 100 km Ultramarathon	12:08:46 h	1210
19.05	100km	19th Yatsugatake Nobeyama 100 km	13:30:33 h	812
13.01	100km	23rd Miyako 100 km Ultramarathon	12:49:39 h	203
2012
06.10	100km	9th Echigo Kubikino 100km Ultramarathon	12:31:33 h	569
24.06	100km road race	27. Lake Saroma 100 km Ultramarathon	12:29:25 h	1721
19.05	82km	1st Shizuoka to Yamanashi	20:55:49 h	546
2011
09.10	71.5km	19th Hasetsune Cup - Japan Mountain Endurance Race	18:53:07 h	1156
26.06	100km road race	26. Lake Saroma 100 km Ultramarathon	12:35:25 h	1617
2010
26.09	100km	20. Akita Nairiku 100km Marathon	12:06:40 h	360
27.06	100km	25. Lake Saroma 100 km Ultramarathon	12:18:49 h	1040
16.05	100km	16th Yatsugatake Nobeyama 100 km	13:22:39 h	701
2009
17.05	100km	15th Yatsugatake Nobeyama 100 km	13:09:19 h	418
2007
28.04	100km	17th Fuji 5 Lakes 100 km Challenge	12:24:34 h	188
2006
15.10	100km	12th River Shimanto 100km	12:45:26 h	592
03.05	140km	18. Yamaguchi 100 Hagi-O-Kan Maranic 140 km	22:55:30 h	122
2005
26.06	100km	Open Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon)	12:11:39 h	1090

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	22/11/2025	19th Nagasaki Tachibana Gulf Coast Super Maranic 276	276,00	×4
✓ 2	4/5/2024	18th Nagasaki Tachibana Gulf Coast Super Maranic 173	173,00	×2
✓ 3	3/5/2023	17th Nagasaki Tachibana Gulf Coast Super Maranic 173	173,00	×2
✓ 4	3/5/2006	18. Yamaguchi 100 Hagi-O-Kan Maranic 140 km	140,00	×2
✓ 5	4/5/2016	10th Nagasaki Tachibana Gulf Coast Super Maranic 173	129,00	×1
✓ 6	10/5/2025	3rd Aso Volcano Trail	115,10	×1
✓ 7	2/11/2018	Tachibana Bay Coast 105 Ultra Marathon	105,00	×1
✓ 8	4/11/2023	17th Nagasaki Tachibana Gulf Coast Super Maranic 103	103,00	×1
✓ 9	21/11/2022	16th Nagasaki Tachibana Gulf Coast Super Maranic 103	103,00	×1
✓ 10	26/11/2021	1st Tachibana Bay 273 Autumn Shimabara	103,00	×1
✓ 11	2/11/2019	Tachibana Bay Coast 103 Ultra Marathon	103,00	×1
✓ 12	4/11/2016	Tachibana Bay Coast 100 Ultra Marathon	103,00	×1
✓ 13	31/5/2026	2nd Shimanami Surround 100km	100,00	×1
✓ 14	26/4/2026	2nd Suo-Oshima Ultramarathon	100,00	×1
✓ 15	19/4/2026	26. Okukumano 100 km Ultramarathon	100,00	×1
✓ 16	1/2/2026	5th Amami yori yori Run	100,00	×1
✓ 17	24/1/2026	36th Miyako 100 km Ultramarathon	100,00	×1
✓ 18	14/12/2025	6th Tobishima Ultra Marathon	100,00	×1
✓ 19	18/10/2025	8th Iki 100 km Ultra Marathon	100,00	×1
✓ 20	8/6/2025	13th Hida Takayama 100 km Ultramarathon	100,00	×1
✓ 21	25/5/2025	31th Ebisu-Daikoku 100 km Marathon	100,00	×1
✓ 22	2/2/2025	4th Amami yori yori Run	100,00	×1
✓ 23	26/1/2025	35th Miyako 100 km Ultramarathon	100,00	×1
✓ 24	8/12/2024	5th Tobishima Ultra Marathon	100,00	×1
✓ 25	19/10/2024	7th Iki 100 km Ultra Marathon	100,00	×1
✓ 26	16/6/2024	17. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 27	21/4/2024	3rd Suo-Oshima Ultra Marathon - 100 km	100,00	×1
✓ 28	21/1/2024	34th Miyako 100 km Ultramarathon	100,00	×1
✓ 29	10/12/2023	4th Tobishima Ultra Marathon	100,00	×1
✓ 30	21/10/2023	6th Iki 100 km Ultra Marathon	100,00	×1
✓ 31	22/1/2023	33th Miyako 100 km Ultramarathon	100,00	×1
✓ 32	11/12/2022	3rd Tobishima Ultra Marathon	100,00	×1
✓ 33	15/10/2022	5th Iki 100 km Ultra Marathon	100,00	×1
✓ 34	19/1/2020	30th Miyako 100 km Ultramarathon	100,00	×1
✓ 35	19/10/2019	4th Iki 100 km Ultra Marathon	100,00	×1
✓ 36	20/1/2019	29th Miyako 100 km Ultramarathon	100,00	×1
✓ 37	14/6/2015	11th Iwate Ginga 100km Marathon Challenge	100,00	×1
✓ 38	17/5/2015	21st Yatsugatake Nobeyama 100 km	100,00	×1
✓ 39	11/1/2015	25th Miyako 100 km Ultramarathon	100,00	×1
✓ 40	12/1/2014	24th Miyako 100 km Ultramarathon	100,00	×1
✓ 41	30/6/2013	28. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 42	19/5/2013	19th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 43	13/1/2013	23rd Miyako 100 km Ultramarathon	100,00	×1
✓ 44	6/10/2012	9th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 45	24/6/2012	27. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 46	26/6/2011	26. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 47	26/9/2010	20. Akita Nairiku 100km Marathon	100,00	×1
✓ 48	27/6/2010	25. Lake Saroma 100 km Ultramarathon	100,00	×1
✓ 49	16/5/2010	16th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 50	17/5/2009	15th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 51	28/4/2007	17th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 52	15/10/2006	12th River Shimanto 100km	100,00	×1
✓ 53	26/6/2005	Open Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon)	100,00	×1
✓ 54	14/6/2026	10th JAL Mukatsuku Double Marathon	84,39	×1
✓ 55	19/5/2012	1st Shizuoka to Yamanashi (STY)	82,00	×1
✓ 56	4/5/2022	16th Nagasaki Tachibana Gulf Coast Super Maranic 80	80,00	×1
✓ 57	5/3/2017	3rd Nagoura Marathon 75 km	75,00	×1
✓ 58	15/3/2015	2nd Izu Trail Journey	72,00	×1
✓ 59	9/10/2011	19th Hasetsune Cup - Japan Mountain Endurance Race	71,50	×1
✓ 60	22/4/2023	2nd KAI 69k	69,00	×1
✓ 61	23/7/2023	11th Kirishima Ebino-kougen Extreme Trail	66,00	×1
✓ 62	19/7/2015	6th Nozawa Onsen 4100D Mountain Trail	65,00	—
✓ 63	20/7/2014	5th Nozawa Onsen 4100D Mountain Trail	65,00	—
64	13/5/2018	4th Ishigaki Island Ultra Marathon	60,00	—
65	21/5/2022	8th Mt. Hiei Int. 50 km Trail Run	50,00	—
66	20/10/2018	3rd Iki 50 km Ultra Marathon	50,00	—