Yukio (清水由紀夫) Shimizu

Born : 1956 Cat. M70 Ultrarunner since 2007

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

42,6%

Rank quotient ?This runner's calculation uses 86 eligible race(s): Σ(rank − 1) = 18 370; Σ finishers = 43 084. 18 370 / 43 084 × 100 = 42.64%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed86

Km — ultra races8 604 km

> 100 km17

> 160 km6

> 200 km2

> 24h1

Longest race255,0 km

10th River Road Foot Race 255 km — 3/5/2014

Km per year (ultra races)

355

2022

685

2023

354

2024

501

2025

390

2026

Race types (share of distance)

Road83,5%

Trail16,5%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km5h04'54 100 km10h19'21 24 h100,00 km

HISTORY

86 race(s) · 1 split(s) nested

Date		Race	Perf.	Rk
2026
28.06	50km	41. Lake Saroma 50 km Ultramarathon	5:04:54 h	50
21.06	50km	19. Okinoshima 50km Ultra Marathon	5:30:28 h	44
23.05	24h	IAU 24h Asia and Oceania Championships Open	100.000 km	106
23.05	12h	IAU 24h Asia and Oceania Championships Open - 12h Split	60.000 km	109
14.03	90km	16th Little Edo 90k	13:01:47 h	51
11.01	100km	9th Yakushima Ultramarathon 100 km	13:38:03 h	44
2025
05.10	100km	6th Mine Akiyoshidai Geopark Ultra Marathon	13:31:30 h	57
15.06	50km	18. Okinoshima 50km Ultra Marathon	6:10:20 h	88
03.05	251km	20th River Road Foot Race 251 km	2d 03:50:19 h	34
12.01	100km	8th Yakushima Ultramarathon 100 km	13:03:43 h	25
2024
13.10	100km	15th Echigo Kubikino 100km Ultramarathon	13:37:48 h	680
13.07	154km	8th Michinoku Tsugaru Journey Run 154K	27:08:48 h	42
16.06	100km	17. Okinoshima 100km Ultra Marathon	14:10:10 h	242
2023
10.12	100km	4th Tobishima Ultra Marathon	13:07:05 h	127
15.10	100km	29th River Shimanto 100km	13:21:28 h	752
15.07	142km	7th Michinoku Tsugaru Journey Run 150K	24:36:06 h	27
29.04	188km	2nd Reiheishi Michi Kyoto to Nikko - 188 km	2d 03:30:23 h	2 🥈
01.04	155km	3rd Tone River Run Up Journey Run Downstream	27:52:34 h	39
2022
09.10	100km	14th Echigo Kubikino 100km Ultramarathon	13:57:55 h	860
12.06	100km	16th Iwate Ginga 100km Marathon Challenge	13:28:41 h	584
02.04	155km	2nd Tone River Run Up Journey Run Downstream	26:40:00 h	56
2021
26.11	103km	1st Tachibana Bay 273 Autumn Shimabara	14:40:44 h	34
30.10	146km	3rd Autumn leaves in Okumusashi / Chichibu Journey run	23:04:35 h	138
03.10	64km	8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	8:51:39 h	65
17.07	117km	1st Nakasendo Ultra	24:38:00 h	28
2020
19.09	123km	3rd Utsukushima Fukushima Journey Run 123K	20:06:06 h	94
2019
29.09	100km	3rd Yasaka Ultra Marathon in Hamada - 100 km	13:55:21 h	45
13.07	177km	4th Michinoku Tsugaru Journey Run 177K	30:06:27 h	32
16.06	100km	14. Okinoshima 100km Ultra Marathon	13:39:59 h	337
12.05	100km	26th Ebisu-Daikoku 100 km Marathon	13:35:39 h	355
20.01	50km	29th Miyako 50 km Ultramarathon	5:51:42 h	40
2018
16.12	100km	3rd Okinawa 100km Ultramarathon	13:43:55 h	305
21.10	100km	24th River Shimanto 100km	13:19:17 h	936
14.07	188km	3rd Michinoku Tsugaru Journey Run 188K	34:43:41 h	33
17.06	100km	13. Okinoshima 100km Ultra Marathon	13:41:57 h	282
2017
17.09	52km	9th Shinetsu Five Mountains Trail 110km	8:01:00 h	440
15.07	200km	2nd Michinoku Tsugaru Journey Run 200K	38:51:09 h	74
18.06	100km	12. Okinoshima 100km Ultra Marathon	12:45:43 h	166
2016
16.10	100km	22nd River Shimanto 100km	13:09:11 h	837
09.10	100km	11th Echigo Kubikino 100km Ultramarathon	12:34:47 h	693
02.10	50km	10th Madarao Forest Trails 50km	8:21:26 h	339
06.03	100km	2nd Nagoura Marathon 100 km	14:22:41 h	211
2015
18.10	60km	4th Noto Peninsula 60 km Ultra Marathon	6:36:50 h	26
2014
09.11	50km	6th Kanna Mountain Run	9:33:12 h	74
19.10	100km	20th River Shimanto 100km	10:23:53 h	170
12.10	100km	10th Echigo Kubikino 100km Ultramarathon	10:40:19 h	216
05.10	50km	8th Madarao Forest Trails 50km	6:11:59 h	89
15.06	100km	9. Okinoshima 100km Ultra Marathon	11:25:43 h	65
08.06	72km	3rd Hida Takayama 72 km Ultramarathon	7:42:48 h	70
03.05	255km	10th River Road Foot Race 255 km	46:48:17 h	8
26.04	88km	3rd Shizuoka to Yamanashi	21:21:12 h	379
2013
10.11	50km	5th Kanna Mountain Run	8:01:04 h	36
20.10	100km	2nd Noto Peninsula 100 km Ultra Marathon	11:03:36 h	64
06.10	50km	7th Madarao Forest Trails 50km	6:26:41 h	76
30.06	100km road race	28. Lake Saroma 100 km Ultramarathon	11:15:23 h	730
16.06	100km	8. Okinoshima 100km Ultra Marathon	13:11:03 h	165
09.06	72km	2nd Hida Takayama 72 km Ultramarathon	8:03:01 h	45
26.04	84km	2nd Shizuoka to Yamanashi	19:18:35 h	493
2012
21.10	100km	1st Noto Peninsula 100 km Ultra Marathon	11:28:16 h	60
07.10	50km	6th Madarao Forest Trails 50km	6:07:37 h	66
06.10	100km	9th Echigo Kubikino 100km Ultramarathon	10:22:22 h	131
16.09	110km	4th Shinetsu Five Mountains Trail 110km	17:11:18 h	105
17.06	100km	7. Okinoshima 100km Ultra Marathon	11:41:09 h	73
10.06	72km	1st Hida Takayama 72 km Ultramarathon	8:10:19 h	36
22.04	72km	22nd Fuji 5 Lakes 72 km Challenge	7:35:21 h	80
2011
16.10	100km	17th River Shimanto 100km	11:26:11 h	282
02.10	50km	5th Madarao Forest Trails 50km	6:29:24 h	91
24.09	110km	3rd Shinetsu Five Mountains Trail 110km	20:36:40 h	280
19.06	100km	6. Okinoshima 100km Ultra Marathon	12:32:17 h	139
30.04	72km	21st Fuji 5 Lakes 72 km Challenge	9:03:54 h	213
2010
17.10	100km	16th River Shimanto 100km	12:09:37 h	433
03.10	50km	4th Madarao Forest Trails 50km	7:45:18 h	218
26.09	100km	20. Akita Nairiku 100km Marathon	11:43:07 h	260
19.09	110km	2nd Shinetsu Five Mountains Trail 110km	19:07:32 h	162
20.06	100km	5. Okinoshima 100km Ultra Marathon	11:13:13 h	47
16.05	100km	16th Yatsugatake Nobeyama 100 km	12:25:42 h	389
25.04	72km	20th Fuji 5 Lakes 72 km Challenge	9:10:20 h	204
2009
18.10	100km	15th River Shimanto 100km	12:22:43 h	552
04.10	50km	3rd Madarao Forest Trails 50km	6:10:16 h	61
20.09	100km	9th Tango 100 km Ultramarathon	12:17:08 h	285
26.04	100km	19th Fuji 5 Lakes 100 km Challenge	11:59:41 h	204
2008
19.10	100km	14th River Shimanto 100km	10:42:03 h	168
11.10	100km	7th Echigo Kubikino 100km Ultramarathon	10:19:21 h	107
14.09	100km	8th Tango 100 km Ultramarathon	12:45:41 h	265
18.05	100km	14th Yatsugatake Nobeyama 100 km	13:20:30 h	462
2007
14.10	100km	13th River Shimanto 100km	13:24:34 h	843
20.05	100km	13th Yatsugatake Nobeyama 100 km	11:29:58 h	140

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	3/5/2014	10th River Road Foot Race 255 km	255,00	×3
✓ 2	3/5/2025	20th River Road Foot Race 251 km	251,00	×3
✓ 3	15/7/2017	2nd Michinoku Tsugaru Journey Run 200K	200,00	×2
✓ 4	29/4/2023	2nd Reiheishi Michi Kyoto to Nikko - 188 km	188,00	×2
✓ 5	14/7/2018	3rd Michinoku Tsugaru Journey Run 188K	188,00	×2
✓ 6	13/7/2019	4th Michinoku Tsugaru Journey Run 177K	177,00	×2
✓ 7	1/4/2023	3rd Tone River Run Up Journey Run Downstream	155,00	×2
✓ 8	2/4/2022	2nd Tone River Run Up Journey Run Downstream	155,00	×2
✓ 9	13/7/2024	8th Michinoku Tsugaru Journey Run 154K	154,00	×2
✓ 10	30/10/2021	3rd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 11	15/7/2023	7th Michinoku Tsugaru Journey Run 150K	142,00	×1
✓ 12	19/9/2020	3rd Utsukushima Fukushima Journey Run 123K	123,00	×1
✓ 13	17/7/2021	1st Nakasendo Ultra	117,00	×1
✓ 14	16/9/2012	4th Shinetsu Five Mountains Trail 110km	110,00	×1
✓ 15	24/9/2011	3rd Shinetsu Five Mountains Trail 110km	110,00	×1
✓ 16	19/9/2010	2nd Shinetsu Five Mountains Trail 110km	110,00	×1
✓ 17	26/11/2021	1st Tachibana Bay 273 Autumn Shimabara	103,00	×1
✓ 18	23/5/2026	IAU 24h Asia and Oceania Championships Open	100,00	×1
✓ 19	11/1/2026	9th Yakushima Ultramarathon 100 km	100,00	×1
✓ 20	5/10/2025	6th Mine Akiyoshidai Geopark Ultra Marathon	100,00	×1
✓ 21	12/1/2025	8th Yakushima Ultramarathon 100 km	100,00	×1
✓ 22	13/10/2024	15th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 23	16/6/2024	17. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 24	10/12/2023	4th Tobishima Ultra Marathon	100,00	×1
✓ 25	15/10/2023	29th River Shimanto 100km	100,00	×1
✓ 26	9/10/2022	14th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 27	12/6/2022	16th Iwate Ginga 100km Marathon Challenge	100,00	×1
✓ 28	29/9/2019	3rd Yasaka Ultra Marathon in Hamada - 100 km	100,00	×1
✓ 29	16/6/2019	14. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 30	12/5/2019	26th Ebisu-Daikoku 100 km Marathon	100,00	×1
✓ 31	16/12/2018	3rd Okinawa 100km Ultramarathon	100,00	×1
✓ 32	21/10/2018	24th River Shimanto 100km	100,00	×1
✓ 33	17/6/2018	13. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 34	18/6/2017	12. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 35	16/10/2016	22nd River Shimanto 100km	100,00	×1
✓ 36	9/10/2016	11th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 37	6/3/2016	2nd Nagoura Marathon 100 km	100,00	×1
✓ 38	19/10/2014	20th River Shimanto 100km	100,00	×1
✓ 39	12/10/2014	10th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 40	15/6/2014	9. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 41	20/10/2013	2nd Noto Peninsula 100 km Ultra Marathon	100,00	×1
✓ 42	30/6/2013	28. Lake Saroma 100 km Ultramarathon (JPN)	100,00	×1
✓ 43	16/6/2013	8. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 44	21/10/2012	1st Noto Peninsula 100 km Ultra Marathon	100,00	×1
✓ 45	6/10/2012	9th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 46	17/6/2012	7. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 47	16/10/2011	17th River Shimanto 100km	100,00	×1
✓ 48	19/6/2011	6. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 49	17/10/2010	16th River Shimanto 100km	100,00	×1
✓ 50	26/9/2010	20. Akita Nairiku 100km Marathon	100,00	×1
✓ 51	20/6/2010	5. Okinoshima 100km Ultra Marathon	100,00	×1
✓ 52	16/5/2010	16th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 53	18/10/2009	15th River Shimanto 100km	100,00	×1
✓ 54	20/9/2009	9th Tango 100 km Ultramarathon	100,00	×1
✓ 55	26/4/2009	19th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 56	19/10/2008	14th River Shimanto 100km	100,00	×1
✓ 57	11/10/2008	7th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 58	14/9/2008	8th Tango 100 km Ultramarathon	100,00	×1
✓ 59	18/5/2008	14th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 60	14/10/2007	13th River Shimanto 100km	100,00	×1
✓ 61	20/5/2007	13th Yatsugatake Nobeyama 100 km	100,00	×1
✓ 62	14/3/2026	16th Little Edo 90k	90,00	×1
✓ 63	26/4/2014	3rd Shizuoka to Yamanashi (STY)	88,00	×1
✓ 64	26/4/2013	2nd Shizuoka to Yamanashi (STY)	84,00	×1
✓ 65	8/6/2014	3rd Hida Takayama 72 km Ultramarathon	72,00	—
✓ 66	9/6/2013	2nd Hida Takayama 72 km Ultramarathon	72,00	—
✓ 67	10/6/2012	1st Hida Takayama 72 km Ultramarathon	72,00	—
✓ 68	22/4/2012	22nd Fuji 5 Lakes 72 km Challenge	72,00	—
✓ 69	30/4/2011	21st Fuji 5 Lakes 72 km Challenge	72,00	—
✓ 70	25/4/2010	20th Fuji 5 Lakes 72 km Challenge	72,00	—
71	3/10/2021	8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	64,00	—
72	18/10/2015	4th Noto Peninsula 60 km Ultra Marathon	60,00	—
73	17/9/2017	9th Shinetsu Five Mountains Trail 110km	52,00	—
74	28/6/2026	41. Lake Saroma 50 km Ultramarathon	50,00	—
75	21/6/2026	19. Okinoshima 50km Ultra Marathon	50,00	—
76	15/6/2025	18. Okinoshima 50km Ultra Marathon	50,00	—
77	20/1/2019	29th Miyako 50 km Ultramarathon	50,00	—
78	2/10/2016	10th Madarao Forest Trails 50km	50,00	—
79	9/11/2014	6th Kanna Mountain Run	50,00	—
80	5/10/2014	8th Madarao Forest Trails 50km	50,00	—
81	10/11/2013	5th Kanna Mountain Run	50,00	—
82	6/10/2013	7th Madarao Forest Trails 50km	50,00	—
83	7/10/2012	6th Madarao Forest Trails 50km	50,00	—
84	2/10/2011	5th Madarao Forest Trails 50km	50,00	—
85	3/10/2010	4th Madarao Forest Trails 50km	50,00	—
86	4/10/2009	3rd Madarao Forest Trails 50km	50,00	—