James Marinas

Born : 1971 Cat. M55 Ultrarunner since 2019

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 ?

United States

84,6%

Rank quotient ?This runner's calculation uses 65 eligible race(s): Σ(rank − 1) = 5 182; Σ finishers = 6 127. 5 182 / 6 127 × 100 = 84.58%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed65

Km — ultra races4 839 km

> 100 km8

> 160 km7

> 24h3

> 48h1

Longest race165,8 km

4th No Business 100 — 16/10/2020

Km per year (ultra races)

463

2022

1 011

2023

503

2024

513

2025

2026

Race types (share of distance)

Road11,8%

Trail88,2%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 32

🏅 Top 3 M2

Longest winning streak0

Current streak0

Records

50 km6h11'42 100 km15h26'23 50 mi10h54'33 100 mi28h59'21 12 h83,52 km 24 h80,47 km 48 h162,54 km

HISTORY

65 race(s)

Date		Race	Perf.	Rk
2025
22.11	100km	11th Dinosaur Valley Endurance Run 100 km	21:56:30 h	141
24.10	48h	2nd Weekend at Burney 48h	162.543 km	3 🥉
22.08	50km	13th Run-de-Vous 50 km Endurance Run	8:24:00 h	4
14.06	100km	15th Cool Moon 100 km Endurance Run	26:08:33 h	24
07.06	50km	40th Silver State 50 km	12:51:06 h	81
08.03	50km	13th Marin Ultra Challenge 50 km Race	10:44:10 h	230
2024
23.11	100km	10th Dinosaur Valley Endurance Run 100 km	21:01:40 h	112
11.10	48km	14th Kodiak Ultra Marathons by UTMB - 50K	9:23:54 h	475
29.09	50mi	42nd Dick Collins Firetrails 50 Mile	15:22:32 h	73
23.08	50km	12th Run-de-Vous 50 km Endurance Run	8:05:07 h	10
13.07	12h	15th Dirty Dozen 12h Endurance Run	75.928 km	13
29.06	50km	6th Golden State 50K	7:49:24 h	57
18.05	50km	39th Silver State 50 km	10:08:44 h	122
01.03	24h	4th Big Bloops 24 Hour Ultra Run	48.280 km	16
2023
25.11	28mi	38th Quad Dipsea Trail Run	8:01:13 h	291
14.10	50mi	37th Ruth Anderson Ultra 50mi	10:54:33 h	18
30.09	50mi	41st Dick Collins Firetrails 50 Mile	13:58:34 h	84
24.09	50km	2nd South Hills Single Track Trail Run - Summer	7:36:03 h	14
09.09	50km	3rd The Groves 50km Trail Race	9:09:00 h	9
03.09	50km	13th Crystal Springs 50 km Summer Trail Run	7:55:17 h	38
25.08	100mi	11th Run-de-Vous 100 Mile Endurance Run	31:20:52 h	3 🥉
06.08	50km	42nd Skyline 50k Endurance Run	8:50:39 h	121
08.07	12h	14th Dirty Dozen 12h Endurance Run	81.336 km	18
17.06	12h	2nd SF Half Day 12h	82.680 km	13
15.06	50km	14th San Lorenzo River Trail Run	8:29:51 h	31
03.06	50mi	11th Marin Ultra Challenge 50 Mile Race	14:23:55 h	110
18.02	50km	11th FOURmidable 50K	8:45:51 h	205
28.01	100km	9th Ordnance 100K	17:05:39 h	28
2022
03.12	100mi	9th Brazos Bend 100	28:59:21 h	99
26.11	28mi	37th Quad Dipsea Trail Run	9:04:45 h	284
27.08	14h	10th Run-de-Vous 14h Endurance Run	80.869 km	5
09.07	12h	13th Dirty Dozen 12h Endurance Run	75.928 km	7
23.04	50km	9th The Canyons Endurance 50 km Run	9:28:33 h	166
05.02	50km	10th Fort Ord 50K Trail Run	9:31:52 h	65
2021
27.11	28mi	36th Quad Dipsea Trail Run	8:48:08 h	260
19.11	100km	1st Golden Gate Trail Classic 100 km Race	20:19:41 h	55
30.10	159.2km	19th Javelina Jundred 100 Mile Endurance Run	29:11:09 h	269
01.08	50km	40th Skyline 50k Endurance Run	8:09:53 h	176
31.07	50km	11th Crystal Springs 50 km Summer Trail Run	6:58:28 h	26
24.07	50km	9th Fort Ord 50K Trail Run	7:31:21 h	62
10.07	50km	11th Golden Gate 50 km Summer Trail Run	7:16:23 h	48
19.06	50km	12th San Lorenzo River Trail Run	7:52:33 h	62
2020
16.10	103mi	4th No Business 100	34:16:27 h	121
28.02	24h	1st Big Bloops 24 Hour Ultra Run	80.467 km	4
22.02	52km	3rd Mount Umunhum Trail Run	7:54:48 h	57
01.02	100km	7th Ordnance 100K	15:26:23 h	32
19.01	50km	10th Crystal Springs 50 km Winter Trail Run	7:24:53 h	32
18.01	50km	14th Fremont Fat Ass 50k	6:11:42 h	31
2019
31.12	12h	10th New Years One Day 12 Hour Run	83.524 km	14
02.11	100mi	19th Rio Del Lago 100 Mile Endurance Run	29:39:43 h	235
05.10	100km	8th Cuyamaca 100 km Endurance Run	18:04:17 h	153
14.09	100mi	13th Headlands Hundred 100 Mile Endurance Run	33:33:19 h	45
10.08	50km	10th Redwood Summer Trail Run	7:45:14 h	28
10.08	50km	10th Redwood 50 km Summer Trail Run	7:45:14 h	28
03.08	50km	1st The Groves 50km Trail Race	7:31:48 h	32
13.07	50km	9th Golden Gate 50 km Summer Trail Run	6:43:54 h	24
22.06	50km	10th San Lorenzo River Trail Run	7:05:55 h	21
15.06	50km	9th Redwood (Spring) 50 km Trail Run	6:56:14 h	35
02.06	50km	8th Big Basin - Skyline to the Sea 50 km	6:47:58 h	94
18.05	50mi	7th San Francisco 50 Mile Endurance Run	13:40:43 h	37
13.04	50km	11th Diablo Trails Challenge	8:44:19 h	101
07.04	50km	5th Woodside Purisima Creek Crossover	7:12:45 h	58
23.03	50km	3rd San Jose Trail Run	7:00:07 h	39
20.01	50km	9th Crystal Springs 50 km Winter Trail Run	7:40:01 h	45
Unknown date
—	100mi	13th Jackpot Ultra Running Festival 100 Mile Race	39:05:01 h	53

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	16/10/2020	4th No Business 100	165,76	×3
✓ 2	24/10/2025	2nd Weekend at Burney 48h	162,54	×3
✓ 3	25/8/2023	11th Run-de-Vous 100 Mile Endurance Run	160,93	×3
✓ 4	3/12/2022	9th Brazos Bend 100	160,93	×3
✓ 5	2/11/2019	19th Rio Del Lago 100 Mile Endurance Run	160,93	×3
✓ 6	14/9/2019	13th Headlands Hundred 100 Mile Endurance Run	160,93	×3
✓ 7	—	13th Jackpot Ultra Running Festival 100 Mile Race	160,93	×3
✓ 8	30/10/2021	19th Javelina Jundred 100 Mile Endurance Run	159,20	×3
✓ 9	22/11/2025	11th Dinosaur Valley Endurance Run 100 km	100,00	×2
✓ 10	14/6/2025	15th Cool Moon 100 km Endurance Run	100,00	×2
✓ 11	23/11/2024	10th Dinosaur Valley Endurance Run 100 km	100,00	×2
✓ 12	28/1/2023	9th Ordnance 100K	100,00	×2
✓ 13	19/11/2021	1st Golden Gate Trail Classic 100 km Race	100,00	×2
✓ 14	1/2/2020	7th Ordnance 100K	100,00	×2
✓ 15	5/10/2019	8th Cuyamaca 100 km Endurance Run	100,00	×2
✓ 16	31/12/2019	10th New Years One Day 12 Hour Run	83,52	×1
✓ 17	17/6/2023	2nd SF Half Day 12h	82,68	×1
✓ 18	8/7/2023	14th Dirty Dozen 12h Endurance Run	81,34	×1
✓ 19	27/8/2022	10th Run-de-Vous 14h Endurance Run	80,87	×1
✓ 20	29/9/2024	42nd Dick Collins Firetrails 50 Mile	80,47	×1
✓ 21	14/10/2023	37th Ruth Anderson Ultra 50mi	80,47	×1
✓ 22	30/9/2023	41st Dick Collins Firetrails 50 Mile	80,47	×1
✓ 23	3/6/2023	11th Marin Ultra Challenge 50 Mile Race	80,47	×1
✓ 24	18/5/2019	7th San Francisco 50 Mile Endurance Run	80,47	×1
✓ 25	28/2/2020	1st Big Bloops 24 Hour Ultra Run	80,47	×1
✓ 26	13/7/2024	15th Dirty Dozen 12h Endurance Run	75,93	×1
✓ 27	9/7/2022	13th Dirty Dozen 12h Endurance Run	75,93	×1
✓ 28	22/2/2020	3rd Mount Umunhum Trail Run	52,00	×1
✓ 29	22/8/2025	13th Run-de-Vous 50 km Endurance Run	50,00	×1
✓ 30	7/6/2025	40th Silver State 50 km	50,00	×1
✓ 31	8/3/2025	13th Marin Ultra Challenge 50 km Race	50,00	×1
✓ 32	23/8/2024	12th Run-de-Vous 50 km Endurance Run	50,00	×1
✓ 33	29/6/2024	6th Golden State 50K	50,00	×1
✓ 34	18/5/2024	39th Silver State 50 km	50,00	×1
✓ 35	24/9/2023	2nd South Hills Single Track Trail Run - Summer	50,00	×1
✓ 36	9/9/2023	3rd The Groves 50km Trail Race	50,00	×1
✓ 37	3/9/2023	13th Crystal Springs 50 km Summer Trail Run	50,00	×1
✓ 38	6/8/2023	42nd Skyline 50k Endurance Run	50,00	×1
✓ 39	15/6/2023	14th San Lorenzo River Trail Run	50,00	×1
✓ 40	18/2/2023	11th FOURmidable 50K	50,00	×1
✓ 41	23/4/2022	9th The Canyons Endurance 50 km Run	50,00	×1
✓ 42	5/2/2022	10th Fort Ord 50K Trail Run	50,00	×1
✓ 43	1/8/2021	40th Skyline 50k Endurance Run	50,00	×1
✓ 44	31/7/2021	11th Crystal Springs 50 km Summer Trail Run	50,00	×1
✓ 45	24/7/2021	9th Fort Ord 50K Trail Run	50,00	×1
✓ 46	10/7/2021	11th Golden Gate 50 km Summer Trail Run	50,00	×1
✓ 47	19/6/2021	12th San Lorenzo River Trail Run	50,00	×1
✓ 48	19/1/2020	10th Crystal Springs 50 km Winter Trail Run	50,00	×1
✓ 49	18/1/2020	14th Fremont Fat Ass 50k	50,00	×1
✓ 50	10/8/2019	10th Redwood Summer Trail Run	50,00	×1
51	3/8/2019	1st The Groves 50km Trail Race	50,00	×1
52	13/7/2019	9th Golden Gate 50 km Summer Trail Run	50,00	×1
53	22/6/2019	10th San Lorenzo River Trail Run	50,00	×1
54	15/6/2019	9th Redwood (Spring) 50 km Trail Run	50,00	×1
55	2/6/2019	8th Big Basin - Skyline to the Sea 50 km	50,00	×1
56	13/4/2019	11th Diablo Trails Challenge	50,00	×1
57	7/4/2019	5th Woodside Purisima Creek Crossover	50,00	×1
58	23/3/2019	3rd San Jose Trail Run	50,00	×1
59	20/1/2019	9th Crystal Springs 50 km Winter Trail Run	50,00	×1
60	1/3/2024	4th Big Bloops 24 Hour Ultra Run	48,28	—
61	11/10/2024	14th Kodiak Ultra Marathons by UTMB - 50K	48,00	—
62	25/11/2023	38th Quad Dipsea Trail Run	45,06	—
63	26/11/2022	37th Quad Dipsea Trail Run	45,06	—
64	27/11/2021	36th Quad Dipsea Trail Run	45,06	—