James Skaggs

Born : 1958 Cat. M65 Ultrarunner since 1993

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 ?

Canada

United States

55,2%

Rank quotient ?This runner's calculation uses 73 eligible race(s): Σ(rank − 1) = 4 470; Σ finishers = 8 105. 4 470 / 8 105 × 100 = 55.15%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed73

Km — ultra races7 511 km

> 100 km27

> 160 km26

> 200 km1

> 24h3

> 48h1

Longest race270,0 km

26th Across the Years, 72h — 29/12/2008

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road10,6%

Trail89,4%

Wins & podiums (ultra)

🏆 Win1

🏆 Win M1

🏅 Top 31

🏅 Top 3 M2

Longest winning streak1

Current streak0

Records

50 km5h14'21 100 km11h45'18 50 mi8h59'32 100 mi20h00'03 12 h108,21 km 24 h171,50 km

HISTORY

73 race(s)

Date		Race	Perf.	Rk
2026
31.01	50km	10th AZT Oracle Rumble 50 km	8:43:21 h	62
2024
15.09	50km	20th Rock Cut Hobo 50K	7:34:02 h	23
2023
24.02	50km	4th Flat Top Mesa 50 km Endurance Run	8:02:53 h	5
2022
11.02	50km	4th Grandmaster Ultras 50 km Run	6:54:01 h	5
2021
05.02	50km	3rd Grandmaster Ultras 50 km Run	6:27:23 h	5
2019
27.09	100mi	21st The Bear 100 Mile Endurance Run	35:10:50 h	178
06.09	100mi	40th Wasatch Front 100 Mile	34:24:59 h	156
03.08	50km	13th El Vaquero Loco 50K Mountain Race	8:34:31 h	62
03.05	50mi	9th Salt Flats 50 Mile	9:49:28 h	9
2018
07.09	100mi	39th Wasatch Front 100 Mile	34:38:10 h	147
04.08	50km	12th El Vaquero Loco 50K Mountain Race	10:06:16 h	88
2017
08.09	100mi	38th Wasatch Front 100 Mile	33:20:13 h	131
05.08	50km	11th El Vaquero Loco 50K Mountain Race	8:50:50 h	60
08.07	100km	4th Beaverhead 100K Endurance Run	17:24:12 h	27
2016
21.10	100mi	11th Pony Express Trail 100 Mile	23:18:25 h	7
09.09	100mi	37th Wasatch Front 100 Mile	34:53:30 h	197
21.08	50km	5th Squamish 50km	8:05:03 h	114
13.02	55km	10th Moab Red Hot 55k	7:57:48 h	252
2015
03.10	50km	8th Endurance Challenge - Wisconsin Trail 50 km	5:58:31 h	121
10.07	50mi	1st Capitol Reef 50 Mile	13:40:28 h	27
27.03	12h	4th Pulse Endurance Runs (Pickled Feet) 12 Hour	108.212 km	1 🏆
20.03	100mi	10th Antelope Island Buffalo Run 100 Mile	20:00:03 h	7
21.02	55km	2nd Antelope Canyon 55 km Race	6:13:22 h	7
2014
05.09	100mi	35th Wasatch Front 100 Mile	29:40:24 h	118
09.08	50km	8th El Vaquero Loco 50K Mountain Race	8:43:30 h	63
28.06	28mi	7th Logan Peak 28 Mile Trail Race	6:13:54 h	54
14.06	50mi	2nd Bryce 50 Mile Trail Run	12:33:01 h	37
07.06	100km	19th Kettle Moraine 100 km Endurance Run	13:55:15 h	17
04.04	100mi	3rd The Zion 100 Mile Run	29:57:23 h	77
2013
06.09	100mi	34th Wasatch Front 100 Mile	30:06:15 h	72
10.08	50km	7th El Vaquero Loco 50K Mountain Race	8:03:47 h	37
16.02	55km	7th Moab Red Hot 55k	6:19:43 h	131
2012
18.08	100km	11th Waldo 100K Trail Run	14:59:53 h	41
28.07	50km	5th Speedgoat 50k	9:55:33 h	169
30.06	28mi	5th Logan Peak 28 Mile Trail Race	5:57:10 h	38
27.04	100mi	2nd Salt Flats 100 Mile	25:38:22 h	23
18.02	55km	6th Moab Red Hot 55k	6:06:54 h	91
2011
09.09	100mi	32nd Wasatch Front 100 Mile	32:35:28 h	113
20.08	100mi	29th Leadville Trail 100 Mile	28:20:22 h	193
30.07	50km	4th Speedgoat 50k	10:12:38 h	143
16.07	100mi	23rd Vermont 100 Mile Endurance Race	23:27:31 h	89
25.06	100mi	38th Western States 100 Mile Endurance Run	27:59:27 h	222
28.05	50mi	2nd Pocatello 50 Mile Trail Run	14:08:11 h	61
23.04	50km	3rd Red Mountain 50K	5:43:55 h	32
19.02	55km	5th Moab Red Hot 55k	6:38:01 h	96
2010
21.08	100km	9th Where's Waldo 100K Ultramarathon	13:44:45 h	41
26.06	28mi	4th Logan Peak 28 Mile Trail Race	6:09:03 h	32
2009
24.10	50mi	4th Ogden Valley Ultra Marathon	8:59:32 h	9
12.09	100mi	30th Wasatch Front 100 Mile	33:57:07 h	115
22.08	100km	8th Where's Waldo 100K Ultramarathon	14:33:44 h	57
18.07	100mi	8th Tahoe Rim Trail 100M Endurance Runs	30:47:00 h	39
27.06	28mi	3rd Logan Peak 28 Mile Trail Race	6:13:40 h	37
2008
29.12	72h	26th Across the Years, 72h	270.000 km	18
06.09	100mi	29th Wasatch Front 100 Mile	32:21:58 h	85
16.08	100km	7th Where's Waldo 100K Ultramarathon	14:08:07 h	39
28.06	28mi	2nd Logan Peak 28 Mile Trail Race	6:12:34 h	12
2007
30.12	24h	25th Across the Years, 24h	171.500 km	4
18.08	100km	6th Where's Waldo 100K Ultramarathon	15:47:02 h	57
05.08	100km	6th Katcina Mosa 100K Mountain Run	16:12:08 h	11
03.02	50mi	1st Twin Peaks 50M	11:20:12 h	19
2006
09.09	100mi	27th Wasatch Front 100 Mile	34:23:11 h	116
19.08	100km	5th Where's Waldo 100K Ultramarathon	14:29:52 h	17
17.06	100mi	17th Mohican Trail 100 Mile	28:43:00 h	42
2005
31.12	24h	23rd Across the Years, 24h	167.000 km	9
2004
19.06	100mi	15th Mohican Trail 100 Mile	24:47:27 h	28
05.06	100km	9th Kettle Moraine 100 km Endurance Run	12:11:30 h	10
03.04	30mi	4th McNaughton 30 Mile Ultra Race	5:17:32 h	13
2003
14.06	100mi	14th Mohican Trail 100 Mile	22:18:34 h	14
07.06	100km	8th Kettle Moraine 100 km Endurance Run	11:45:18 h	6
12.04	50km	3rd McNaughton 50 km Ultra Race	5:14:21 h	11
2002
02.11	50mi	3rd Chicago Lakefront Fall 50 Mile Race	9:12:28 h	18
15.06	100mi	13th Mohican Trail 100 Mile	27:44:55 h	39
1993
01.05	50mi	5th Ouachita Trail 50 Mile	11:08:06 h	37

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	29/12/2008	26th Across the Years, 72h	270,00	×3
✓ 2	30/12/2007	25th Across the Years, 24h	171,50	×2
✓ 3	31/12/2005	23rd Across the Years, 24h	167,00	×2
✓ 4	27/9/2019	21st The Bear 100 Mile Endurance Run	160,93	×2
✓ 5	6/9/2019	40th Wasatch Front 100 Mile	160,93	×2
✓ 6	7/9/2018	39th Wasatch Front 100 Mile	160,93	×2
✓ 7	8/9/2017	38th Wasatch Front 100 Mile	160,93	×2
✓ 8	21/10/2016	11th Pony Express Trail 100 Mile	160,93	×2
✓ 9	9/9/2016	37th Wasatch Front 100 Mile	160,93	×2
✓ 10	20/3/2015	10th Antelope Island Buffalo Run 100 Mile	160,93	×2
✓ 11	5/9/2014	35th Wasatch Front 100 Mile	160,93	×2
✓ 12	4/4/2014	3rd The Zion 100 Mile Run	160,93	×2
✓ 13	6/9/2013	34th Wasatch Front 100 Mile	160,93	×2
✓ 14	27/4/2012	2nd Salt Flats 100 Mile	160,93	×2
✓ 15	9/9/2011	32nd Wasatch Front 100 Mile	160,93	×2
✓ 16	20/8/2011	29th Leadville Trail 100 Mile	160,93	×2
✓ 17	16/7/2011	23rd Vermont 100 Mile Endurance Race	160,93	×2
✓ 18	25/6/2011	38th Western States 100 Mile Endurance Run	160,93	×2
✓ 19	12/9/2009	30th Wasatch Front 100 Mile	160,93	×2
✓ 20	18/7/2009	8th Tahoe Rim Trail 100M Endurance Runs	160,93	×2
✓ 21	6/9/2008	29th Wasatch Front 100 Mile	160,93	×2
✓ 22	9/9/2006	27th Wasatch Front 100 Mile	160,93	×2
✓ 23	17/6/2006	17th Mohican Trail 100 Mile	160,93	×2
✓ 24	19/6/2004	15th Mohican Trail 100 Mile	160,93	×2
✓ 25	14/6/2003	14th Mohican Trail 100 Mile	160,93	×2
✓ 26	15/6/2002	13th Mohican Trail 100 Mile	160,93	×2
✓ 27	27/3/2015	4th Pulse Endurance Runs (Pickled Feet) 12 Hour	108,21	×1
✓ 28	8/7/2017	4th Beaverhead 100K Endurance Run	100,00	×1
✓ 29	7/6/2014	19th Kettle Moraine 100 km Endurance Run	100,00	×1
✓ 30	18/8/2012	11th Waldo 100K Trail Run	100,00	×1
✓ 31	21/8/2010	9th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 32	22/8/2009	8th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 33	16/8/2008	7th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 34	18/8/2007	6th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 35	5/8/2007	6th Katcina Mosa 100K Mountain Run	100,00	×1
✓ 36	19/8/2006	5th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 37	5/6/2004	9th Kettle Moraine 100 km Endurance Run	100,00	×1
✓ 38	7/6/2003	8th Kettle Moraine 100 km Endurance Run	100,00	×1
✓ 39	3/5/2019	9th Salt Flats 50 Mile	80,47	×1
✓ 40	10/7/2015	1st Capitol Reef 50 Mile	80,47	×1
✓ 41	14/6/2014	2nd Bryce 50 Mile Trail Run	80,47	×1
✓ 42	28/5/2011	2nd Pocatello 50 Mile Trail Run	80,47	×1
✓ 43	24/10/2009	4th Ogden Valley Ultra Marathon	80,47	×1
✓ 44	3/2/2007	1st Twin Peaks 50M	80,47	×1
✓ 45	2/11/2002	3rd Chicago Lakefront Fall 50 Mile Race	80,47	×1
✓ 46	1/5/1993	5th Ouachita Trail 50 Mile	80,47	×1
✓ 47	13/2/2016	10th Moab Red Hot 55k	55,00	—
✓ 48	21/2/2015	2nd Antelope Canyon 55 km Race	55,00	—
✓ 49	16/2/2013	7th Moab Red Hot 55k	55,00	—
✓ 50	18/2/2012	6th Moab Red Hot 55k	55,00	—
✓ 51	19/2/2011	5th Moab Red Hot 55k	55,00	—
52	31/1/2026	10th AZT Oracle Rumble 50 km	50,00	—
53	15/9/2024	20th Rock Cut Hobo 50K	50,00	—
54	24/2/2023	4th Flat Top Mesa 50 km Endurance Run	50,00	—
55	11/2/2022	4th Grandmaster Ultras 50 km Run	50,00	—
56	5/2/2021	3rd Grandmaster Ultras 50 km Run	50,00	—
57	3/8/2019	13th El Vaquero Loco 50K Mountain Race	50,00	—
58	4/8/2018	12th El Vaquero Loco 50K Mountain Race	50,00	—
59	5/8/2017	11th El Vaquero Loco 50K Mountain Race	50,00	—
60	21/8/2016	5th Squamish 50km	50,00	—
61	3/10/2015	8th Endurance Challenge - Wisconsin Trail 50 km	50,00	—
62	9/8/2014	8th El Vaquero Loco 50K Mountain Race	50,00	—
63	10/8/2013	7th El Vaquero Loco 50K Mountain Race	50,00	—
64	28/7/2012	5th Speedgoat 50k	50,00	—
65	30/7/2011	4th Speedgoat 50k	50,00	—
66	23/4/2011	3rd Red Mountain 50K	50,00	—
67	12/4/2003	3rd McNaughton 50 km Ultra Race	50,00	—
68	3/4/2004	4th McNaughton 30 Mile Ultra Race	48,28	—
69	28/6/2014	7th Logan Peak 28 Mile Trail Race	45,06	—
70	30/6/2012	5th Logan Peak 28 Mile Trail Race	45,06	—
71	26/6/2010	4th Logan Peak 28 Mile Trail Race	45,06	—
72	27/6/2009	3rd Logan Peak 28 Mile Trail Race	45,06	—
73	28/6/2008	2nd Logan Peak 28 Mile Trail Race	45,06	—