Akiko (宮島亜希子) Miyajima

Born : 1976 Cat. W50 Ultrarunner since 2011

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

Thailand

16,6%

Rank quotient ?This runner's calculation uses 67 eligible race(s): Σ(rank − 1) = 5 030; Σ finishers = 30 245. 5 030 / 30 245 × 100 = 16.63%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed67

Km — ultra races6 475 km

> 100 km20

> 160 km7

> 200 km1

> 24h4

Longest race222,4 km

3rd Hirosaki 24h Ultra Run — 21/5/2024

Km per year (ultra races)

603

2022

630

2023

701

2024

692

2025

359

2026

Race types (share of distance)

Road71,5%

Trail28,5%

Wins & podiums (ultra)

🏆 Win1

🏆 Win F10

🏅 Top 33

🏅 Top 3 F32

Longest winning streak1

Current streak0

Records

50 km6h04'02 100 km9h09'41 50 mi8h35'37 100 mi27h27'55 12 h128,75 km 24 h222,39 km

HISTORY

68 race(s) · 2 split(s) nested

Date		Race	Perf.	Rk
2026
05.07	80km	13th Naeba-Sanroku Geopark Tsunan Ultramarathon 80K	8:35:37 h	10
23.05	12h	IAU 24h Asia and Oceania Championships - 12h Split	108.750 km	55
23.05	24h	IAU 24h Asia and Oceania Championships	198.929 km	43
11.04	8h	21st Toda Saiko 8 Hours	80.000 km	10
2025
06.12	48km	2nd Chiangmai Thailand by UTMB - HMONG 50-DAY	11:53:30 h	1422
13.09	128km	8th Utsukushima Fukushima Journey Run 128K	15:03:14 h	3 🥉
21.06	105km	1st Kaga Spa by UTMB - Kaga Spa Trail Endurance100	24:18:11 h	278
31.05	100km	5th Lake Suwa Ultra Marathon - 100 km	9:37:10 h	9
11.05	51km	6th FunTrails Round Minano	7:28:37 h	55
20.04	120km	35th Fuji 5 Lakes Sparta Challenge	12:06:40 h	66
08.03	24h	16th Jingu Gaien 24 Hour Challenge	140.403 km	64
08.03	6h	16th Jingu Gaien 24 Hour Challenge - 6h Split	62.254 km	41
08.03	12h	16th Jingu Gaien 24 Hour Challenge -12h Split	113.912 km	30
2024
13.10	100km	15th Echigo Kubikino 100km Ultramarathon	9:30:35 h	32
22.09	75km	2nd Mina no Tenku Ultra Marathon	7:46:53 h	13
08.09	50km	13th Hakuba Int. Trail Run	7:03:51 h	54
14.07	65km	15th Nozawa Onsen 4100D Mountain Trail	10:15:09 h	63
21.05	24h	3rd Hirosaki 24h Ultra Run	222.385 km	9
21.04	118km	34th Fuji 5 Lakes 118 km Challenge	11:27:40 h	25
13.04	71km	19th Toda Saiko 70 km	6:06:01 h	13
2023
21.10	100km	6th Iki 100 km Ultra Marathon	9:19:53 h	23
17.09	127km	6th Utsukushima Fukushima Journey Run 127K	15:17:55 h	3 🥉
01.07	8h	29th 8-Hour Endurance Race Tokorozawa	78.400 km	7
04.06	78km	30. Ultramarathon Okumusashi	7:31:03 h	56
26.05	12h	2nd Hirosaki 12h Ultra Run	128.750 km	1 🏆
16.04	118km	33th Fuji 5 Lakes 118 km Challenge	11:37:44 h	31
2022
18.09	109km	14th Shinetsu Five Mountains Trail 110km	17:27:37 h	45
05.06	78km	29. Ultramarathon Okumusashi	6:49:58 h	39
27.05	45km	1st Karuizawa Trail Running Race	6:25:23 h	33
24.04	100km	3rd Yamadera Zao 100 km Ultra Marathon	14:40:24 h	5
09.04	71km	17th Toda Saiko 70 km	5:48:26 h	7
09.01	200km	2nd Japan Trophy 200	23:17:00 h	15
2021
03.10	64km	8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	5:48:41 h	9
17.07	24h	1st Japan Trophy 24h	200.000 km	10
27.02	91km	11th Little Edo 91k	8:56:27 h	4
10.01	200km	1st Japan Trophy 200	23:29:00 h	17
2020
04.10	64km	7th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	5:46:43 h	5
22.08	63.7km	1st Toda Aya Lake Ultra Marathon	5:33:43 h	7
2019
07.10	100km	1st Fuji 4 Lakes 100 km Autumn Challenge	9:15:40 h	19
14.09	100mi	11th Shinetsu Five Mountains Trail 100 mile	27:27:55 h	77
23.06	72.6km	6. Spatrail - Shima to Kusatsu 72K	9:57:29 h	92
02.06	78km	26. Ultramarathon Okumusashi	7:11:08 h	84
24.03	100km	1st Ibaraki 100k Ultra Marathon	9:09:41 h	41
2018
02.06	12h	17. Green Charity Marathon Tokyo - Night Run 12H	63.750 km	18
27.04	170km	5th Ultra-Trail Mt. Fuji	30:36:52 h	99
14.04	70km	13th Toda Saiko 70 km	5:44:25 h	25
2017
16.09	102km	9th Shinetsu Five Mountains Trail 100 mile	15:24:53 h	63
01.07	80km	7th Utsukushigahara 80 km Trail Run	9:57:32 h	113
13.05	108.7km	1st Aso Round Trail	21:15:14 h	32
23.04	100km	27th Fuji 5 Lakes 100 km Challenge	9:33:13 h	88
08.04	70km	12th Toda Saiko 70 km	5:54:57 h	30
2016
18.09	110km	8th Shinetsu Five Mountains Trail 110km	14:52:40 h	77
28.08	70km	3rd Tsukuba Renjyo 70 km Road & Trail Run	8:37:06 h	45
02.07	45km	6th Utsukushigahara 45 km Trail Run	5:34:37 h	27
05.06	78km	23. Ultramarathon Okumusashi	7:34:12 h	157
24.04	100km	26th Fuji 5 Lakes 100 km Challenge	9:46:58 h	92
2015
22.09	110km	7th Shinetsu Five Mountains Trail 110km	15:05:13 h	67
30.08	70km	2nd Tsukuba Renjyo 70 km Road & Trail Run	8:59:04 h	55
14.06	100km	11th Iwate Ginga 100km Marathon Challenge	9:22:46 h	45
19.04	100km	25th Fuji 5 Lakes 100 km Challenge	9:26:49 h	52
2014
05.10	50km	8th Madarao Forest Trails 50km	6:04:02 h	79
31.08	70km	1st Tsukuba Renjyo 70 km Road & Trail Run	9:36:57 h	47
27.07	77km	21. Ultramarathon Okumusashi	9:55:08 h	447
01.06	100km	2nd Tokyo Shibamata 100 km (Registered athletes)	9:59:25 h	9
20.04	100km	24th Fuji 5 Lakes 100 km Challenge	9:47:01 h	94
2013
06.10	50km	7th Madarao Forest Trails 50km	6:06:32 h	56
21.04	100km	23rd Fuji 5 Lakes 100 km Challenge	12:36:02 h	271
2012
07.10	50km	6th Madarao Forest Trails 50km	6:14:46 h	78
08.09	100km	7th Bandai Highlands Inawashiro Lake - 100 km	12:09:29 h	15
2011
02.10	50km	5th Madarao Forest Trails 50km	6:48:12 h	117

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	21/5/2024	3rd Hirosaki 24h Ultra Run	222,39	×3
✓ 2	9/1/2022	2nd Japan Trophy 200	200,00	×3
✓ 3	17/7/2021	1st Japan Trophy 24h	200,00	×3
✓ 4	10/1/2021	1st Japan Trophy 200	200,00	×3
✓ 5	23/5/2026	IAU 24h Asia and Oceania Championships	198,93	×3
✓ 6	27/4/2018	5th Ultra-Trail Mt. Fuji (UTMF)	170,00	×2
✓ 7	14/9/2019	11th Shinetsu Five Mountains Trail 100 mile	160,93	×2
✓ 8	8/3/2025	16th Jingu Gaien 24 Hour Challenge	140,40	×2
✓ 9	26/5/2023	2nd Hirosaki 12h Ultra Run	128,75	×1
✓ 10	13/9/2025	8th Utsukushima Fukushima Journey Run 128K	128,00	×1
✓ 11	17/9/2023	6th Utsukushima Fukushima Journey Run 127K	127,00	×1
✓ 12	20/4/2025	35th Fuji 5 Lakes Sparta Challenge	120,00	×1
✓ 13	21/4/2024	34th Fuji 5 Lakes 118 km Challenge	118,00	×1
✓ 14	16/4/2023	33th Fuji 5 Lakes 118 km Challenge	118,00	×1
✓ 15	18/9/2016	8th Shinetsu Five Mountains Trail 110km	110,00	×1
✓ 16	22/9/2015	7th Shinetsu Five Mountains Trail 110km	110,00	×1
✓ 17	18/9/2022	14th Shinetsu Five Mountains Trail 110km	109,00	×1
✓ 18	13/5/2017	1st Aso Round Trail	108,70	×1
✓ 19	21/6/2025	1st Kaga Spa by UTMB - Kaga Spa Trail Endurance100	105,00	×1
✓ 20	16/9/2017	9th Shinetsu Five Mountains Trail 100 mile	102,00	×1
✓ 21	31/5/2025	5th Lake Suwa Ultra Marathon - 100 km	100,00	×1
✓ 22	13/10/2024	15th Echigo Kubikino 100km Ultramarathon	100,00	×1
✓ 23	21/10/2023	6th Iki 100 km Ultra Marathon	100,00	×1
✓ 24	24/4/2022	3rd Yamadera Zao 100 km Ultra Marathon	100,00	×1
✓ 25	7/10/2019	1st Fuji 4 Lakes 100 km Autumn Challenge	100,00	×1
✓ 26	24/3/2019	1st Ibaraki 100k Ultra Marathon	100,00	×1
✓ 27	23/4/2017	27th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 28	24/4/2016	26th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 29	14/6/2015	11th Iwate Ginga 100km Marathon Challenge	100,00	×1
✓ 30	19/4/2015	25th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 31	1/6/2014	2nd Tokyo Shibamata 100 km (Registered athletes)	100,00	×1
✓ 32	20/4/2014	24th Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 33	21/4/2013	23rd Fuji 5 Lakes 100 km Challenge	100,00	×1
✓ 34	8/9/2012	7th Bandai Highlands Inawashiro Lake - 100 km	100,00	×1
✓ 35	27/2/2021	11th Little Edo 91k	91,00	×1
✓ 36	5/7/2026	13th Naeba-Sanroku Geopark Tsunan Ultramarathon 80K	80,00	×1
✓ 37	11/4/2026	21st Toda Saiko 8 Hours	80,00	×1
✓ 38	1/7/2017	7th Utsukushigahara 80 km Trail Run	80,00	×1
✓ 39	1/7/2023	29th 8-Hour Endurance Race Tokorozawa	78,40	×1
✓ 40	4/6/2023	30. Ultramarathon Okumusashi	78,00	×1
✓ 41	5/6/2022	29. Ultramarathon Okumusashi	78,00	×1
✓ 42	2/6/2019	26. Ultramarathon Okumusashi	78,00	×1
✓ 43	5/6/2016	23. Ultramarathon Okumusashi	78,00	×1
✓ 44	27/7/2014	21. Ultramarathon Okumusashi	77,00	×1
✓ 45	22/9/2024	2nd Mina no Tenku Ultra Marathon	75,00	×1
✓ 46	23/6/2019	6. Spatrail - Shima to Kusatsu 72K	72,60	×1
✓ 47	13/4/2024	19th Toda Saiko 70 km	71,00	×1
✓ 48	9/4/2022	17th Toda Saiko 70 km	71,00	×1
✓ 49	14/4/2018	13th Toda Saiko 70 km	70,00	×1
✓ 50	8/4/2017	12th Toda Saiko 70 km	70,00	×1
✓ 51	28/8/2016	3rd Tsukuba Renjyo 70 km Road & Trail Run	70,00	×1
✓ 52	30/8/2015	2nd Tsukuba Renjyo 70 km Road & Trail Run	70,00	×1
✓ 53	31/8/2014	1st Tsukuba Renjyo 70 km Road & Trail Run	70,00	×1
✓ 54	14/7/2024	15th Nozawa Onsen 4100D Mountain Trail	65,00	—
✓ 55	3/10/2021	8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	64,00	—
✓ 56	4/10/2020	7th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K	64,00	—
✓ 57	2/6/2018	17. Green Charity Marathon Tokyo - Night Run 12H	63,75	—
✓ 58	22/8/2020	1st Toda Aya Lake Ultra Marathon	63,70	—
59	11/5/2025	6th FunTrails Round Minano	51,00	—
60	8/9/2024	13th Hakuba Int. Trail Run	50,00	—
61	5/10/2014	8th Madarao Forest Trails 50km	50,00	—
62	6/10/2013	7th Madarao Forest Trails 50km	50,00	—
63	7/10/2012	6th Madarao Forest Trails 50km	50,00	—
64	2/10/2011	5th Madarao Forest Trails 50km	50,00	—
65	6/12/2025	2nd Chiangmai Thailand by UTMB - HMONG 50-DAY	48,00	—
66	27/5/2022	1st Karuizawa Trail Running Race	45,00	—
67	2/7/2016	6th Utsukushigahara 45 km Trail Run	45,00	—