Thomas Nielsen

Born : 1959 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 ?

United States

6,2%

Rank quotient ?This runner's calculation uses 116 eligible race(s): Σ(rank − 1) = 1 009; Σ finishers = 16 350. 1 009 / 16 350 × 100 = 6.17%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed116

Km — ultra races10 527 km

> 100 km26

> 160 km25

Longest race160,9 km

17th San Diego 100 Mile Endurance Run — 8/6/2018

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win15

🏆 Win M17

🏅 Top 354

🏅 Top 3 M55

Longest winning streak2

Current streak0

Records

50 km3h42'58 100 km8h50'37 50 mi6h17'24 100 mi17h38'37

HISTORY

116 race(s)

Date		Race	Perf.	Rk
2018
25.08	31.5mi	19th Tamalpa Headlands 50K	6:10:33 h	33
08.06	100mi	17th San Diego 100 Mile Endurance Run	27:12:52 h	40
2017
09.06	100mi	16th San Diego 100 Mile Endurance Run	25:34:56 h	37
22.04	50mi	25th Leona Divide 50 Mile Run	9:51:07 h	23
01.04	50mi	11th Old Goat's 50 Mile Trail Race	10:20:48 h	13
2016
09.07	50km	11th Angeles National Forest 50k Trail Race	7:45:43 h	44
2015
09.05	50mi	12th PCT 50 Mile Trail Run	9:12:06 h	15
25.04	50mi	26th Zane Grey 50 Mile Endurance Run	11:18:36 h	33
2014
04.10	100km	3rd Cuyamaca 100 km Endurance Run	12:06:20 h	9
02.08	100mi	27th Angeles Crest 100 Mile	22:56:48 h	10
03.05	100km	19th Miwok 100k Trail Race	10:48:09 h	19
01.02	50mi	1st Sean O'Brien 50 Mile Trail Race	8:32:37 h	17
2013
12.10	100km	2nd Cuyamaca 100 km Endurance Run	11:00:22 h	7
04.05	60km	18th Miwok 60k Trail race	6:01:35 h	17
30.03	68mi	1st Coyote Cohorts Backbone Trail Ultra	15:24:00 h	28
16.03	50km	30th San Juan Trail 50 km	4:46:27 h	4
02.02	50mi	2nd Ray Miller 50 Mile Trail Race	8:17:33 h	8
2012
28.10	50km	5th Lake Hodges Trail Fest 50K	4:48:10 h	17
25.08	100mi	14th Cascade Crest Classic 100 Mile	21:40:37 h	7
24.03	50mi	6th Old Goat's 50 Mile Trail Race	8:23:58 h	6
25.02	50mi	1st Ray Miller 50 Mile Trail Race	8:19:08 h	7
2011
22.10	50km	2nd Los Pinos 50K	5:36:00 h	5
23.07	100mi	24th Angeles Crest 100 Mile	22:42:47 h	3 🥉
16.04	50mi	22nd Zane Grey 50 Mile Endurance Run	11:32:54 h	15
2010
25.09	50km	4th Noble Canyon 50k	7:42:48 h	94
21.08	100km	9th Where's Waldo 100K Ultramarathon	14:08:22 h	52
26.06	100mi	37th Western States 100 Mile Endurance Run	22:04:05 h	66
22.05	50mi	5th Jemez Mountain 50mi Trail Run	11:47:58 h	23
01.05	100km	15th Miwok 100k Trail race	9:55:37 h	23
06.03	50mi	20th Old Pueblo 50 Mile Endurance Run	8:19:37 h	3 🥉
2009
26.09	50km	3rd Noble Canyon 50k	4:49:35 h	2 🥈
06.06	100mi	8th San Diego 100 Mile Endurance Run	18:21:35 h	2 🥈
02.05	100km	14th Miwok 100k Trail race	9:39:01 h	12
04.04	50mi	30th American River 50 Mile Endurance Run	6:54:21 h	20
2008
07.06	100mi	7th San Diego 100 Mile Endurance Run	19:26:00 h	1 🏆
19.04	50mi	16th Leona Divide 50 Mile Run	7:41:47 h	4
21.03	100km	1st Coyote Two Moon Ultras 100 km	13:28:00 h	3 🥉
2007
05.05	100km	12th Miwok 100k Trail race	9:16:30 h	8
14.04	50mi	15th Bull Run Run 50 Miler	7:07:44 h	8
31.03	50km	4th Lake Hodges Trail Fest 50K	4:09:41 h	3 🥉
03.02	50km	1st Twin Peaks 50K	6:40:18 h	30
2006
04.11	50km	23th San Juan Trail 50 km	5:03:32 h	3 🥉
16.09	100mi	20th Angeles Crest 100 Mile	20:23:12 h	2 🥈
24.06	100mi	33th Western States 100 Mile Endurance Run	19:41:41 h	4
06.05	100km	11th Miwok 100k Trail race	9:16:53 h	14
08.04	50mi	14th Bull Run Run 50 Miler	7:26:18 h	5
18.03	50km	19th Crown King Scramble 50K	4:53:04 h	2 🥈
11.03	50km	3rd Lake Hodges Trail Fest 50K	4:10:46 h	3 🥉
2005
04.12	50km	19th OTHTC High Desert 50K Ultra	3:51:13 h	5
17.09	100mi	19th Angeles Crest 100 Mile	20:26:30 h	3 🥉
25.06	100mi	32th Western States 100 Mile Endurance Run	18:18:00 h	8
30.04	100km	10th Miwok 100k Trail race	9:49:56 h	17
09.04	50mi	13th Bull Run Run 50 Miler	7:35:46 h	6
26.03	50km	22th San Juan Trail 50 km	4:32:08 h	1 🏆
2004
15.05	50km	6th Capon Valley 50K Run	3:49:00 h	1 🏆
01.05	100km	9th Miwok 100k Trail race	10:13:21 h	14
17.04	50mi	12th Bull Run Run 50 Miler	6:17:24 h	1 🏆
27.03	50km	16th The HAT Run 50K	3:55:09 h	2 🥈
15.02	50km	9th Holiday Lake 50K++	4:16:27 h	2 🥈
2003
14.12	50km	8th Magnus Gluteus Maximus - Tai Aon Yaon 50 km	6:13:00 h	5
06.09	100mi	24th Wasatch Front 100 Mile	25:23:18 h	11
02.08	50km	8th Catoctin 50k Trail Run	5:27:03 h	4
14.06	40mi	1st Highlands Sky 40M Trail Run	7:13:49 h	7
10.05	100mi	9th Massanutten Mountain Trails 100 Mile	21:55:30 h	1 🏆
26.04	50km	3rd Promise Land 50K++	5:17:03 h	3 🥉
12.04	50mi	11th Bull Run Run 50 Miler	6:54:05 h	3 🥉
29.03	50km	15th The HAT Run 50K	4:07:08 h	3 🥉
11.02	50km	8th Holiday Lake 50K++	4:43:22 h	5
2002
12.04	50mi	10th Bull Run Run 50 Miler	7:39:10 h	5
23.03	50km	14th The HAT Run 50K	4:56:28 h	33
2001
23.06	100mi	28th Western States 100 Mile Endurance Run	18:16:33 h	4
05.05	100km	6th Miwok 100k Trail race	9:41:42 h	6
14.04	50mi	10th Leona Divide 50 Mile Run	7:26:50 h	3 🥉
24.02	100km	5th Catalina 100K Trail Run	10:31:42 h	5
03.02	50km	4th San Gabriel Mountain 50K	4:50:32 h	1 🏆
13.01	50mi	21st Avalon Benefit 50-Mile Run	6:32:29 h	3 🥉
2000
10.12	50km	14th OTHTC High Desert 50K Ultra	4:28:58 h	25
30.09	100mi	15th Angeles Crest 100 Mile	19:09:04 h	1 🏆
24.06	100mi	27th Western States 100 Mile Endurance Run	17:38:37 h	2 🥈
06.05	100km	5th Miwok 100k Trail race	8:50:37 h	2 🥈
15.04	50mi	9th Leona Divide 50 Mile Run	7:22:47 h	2 🥈
25.03	50km	17th San Juan Trail 50 km	4:07:22 h	1 🏆
26.02	100km	4th Catalina 100K Trail Run	8:55:02 h	2 🥈
29.01	50km	3rd San Gabriel Mountain 50K	4:29:12 h	2 🥈
1999
04.12	50mi	10th Sunmart Texas Trails 50 Mile	6:22:40 h	7
25.09	100mi	14th Angeles Crest 100 Mile	19:07:50 h	1 🏆
26.06	100mi	26th Western States 100 Mile Endurance Run	18:30:19 h	3 🥉
15.05	50mi	6th Bishop High Sierra Ultramarathons 50 Miles	8:16:49 h	3 🥉
17.04	50mi	8th Leona Divide 50 Mile Run	7:05:52 h	2 🥈
21.03	50mi	2nd Smuggler's 50 Miles	9:49:04 h	2 🥈
27.02	100km	3rd Catalina 100K Trail Run	9:59:10 h	5
1998
06.12	50km	12th OTHTC High Desert 50K Ultra	3:42:58 h	3 🥉
08.11	50mi	PCT 50 Mile Run	8:49:15 h	1 🏆
26.09	100mi	13th Angeles Crest 100 Mile	19:26:08 h	3 🥉
27.06	100mi	25th Western States 100 Mile Endurance Run	18:44:33 h	3 🥉
07.06	33mi	2nd Holcomb Valley 33 Mile	3:54:33 h	1 🏆
16.05	50mi	6th Lost Boys 50 Mile Trail Run	7:34:32 h	2 🥈
25.04	50mi	7th Leona Divide 50 Mile Run	6:58:10 h	2 🥈
15.03	50km	15th San Juan Trail 50 km	4:15:04 h	2 🥈
15.02	50mi	1st Smuggler's 50 Miles	7:21:15 h	1 🏆
1997
27.09	100mi	12th Angeles Crest 100 Mile	20:09:22 h	2 🥈
11.07	100mi	5th Hardrock Hundred Endurance Run	34:52:07 h	7
17.05	50mi	4th Bishop High Sierra Ultramarathons 50 Miles	8:43:29 h	11
19.04	50mi	6th Leona Divide 50 Mile Run	6:57:31 h	3 🥉
16.03	50km	14th San Juan Trail 50 km	4:12:53 h	1 🏆
1996
09.11	50mi	13th San Juan Trail 50 Mile	8:57:22 h	2 🥈
28.09	100mi	11th Angeles Crest 100 Mile	20:22:22 h	2 🥈
08.09	50km	2nd Baldy Peaks 50K	6:30:40 h	7
01.06	50km	7th Shadow of the Giants 50K	4:15:23 h	3 🥉
18.05	50mi	5th Lost Boys 50 Mile Trail Run	7:54:17 h	1 🏆
20.04	50mi	5th Leona Divide 50 Mile Run	6:52:53 h	2 🥈
1994
22.10	50km	1st Cuyamaca-Laguna 50k Trail Race	4:24:30 h	1 🏆
24.09	100mi	9th Angeles Crest 100 Mile	23:39:37 h	14
20.08	50km	1st Baldy Peaks 50K	6:33:57 h	5
04.06	50km	5th Shadow of the Giants 50K	4:12:26 h	9
1993
11.09	50km	2nd Bulldog 50k Ultra Run	4:21:09 h	11

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	8/6/2018	17th San Diego 100 Mile Endurance Run	160,93	×2
✓ 2	9/6/2017	16th San Diego 100 Mile Endurance Run	160,93	×2
✓ 3	2/8/2014	27th Angeles Crest 100 Mile	160,93	×2
✓ 4	25/8/2012	14th Cascade Crest Classic 100 Mile	160,93	×2
✓ 5	23/7/2011	24th Angeles Crest 100 Mile	160,93	×2
✓ 6	26/6/2010	37th Western States 100 Mile Endurance Run	160,93	×2
✓ 7	6/6/2009	8th San Diego 100 Mile Endurance Run	160,93	×2
✓ 8	7/6/2008	7th San Diego 100 Mile Endurance Run	160,93	×2
✓ 9	16/9/2006	20th Angeles Crest 100 Mile	160,93	×2
✓ 10	24/6/2006	33th Western States 100 Mile Endurance Run	160,93	×2
✓ 11	17/9/2005	19th Angeles Crest 100 Mile	160,93	×2
✓ 12	25/6/2005	32th Western States 100 Mile Endurance Run	160,93	×2
✓ 13	6/9/2003	24th Wasatch Front 100 Mile	160,93	×2
✓ 14	10/5/2003	9th Massanutten Mountain Trails 100 Mile	160,93	×2
✓ 15	23/6/2001	28th Western States 100 Mile Endurance Run	160,93	×2
✓ 16	30/9/2000	15th Angeles Crest 100 Mile	160,93	×2
✓ 17	24/6/2000	27th Western States 100 Mile Endurance Run	160,93	×2
✓ 18	25/9/1999	14th Angeles Crest 100 Mile	160,93	×2
✓ 19	26/6/1999	26th Western States 100 Mile Endurance Run	160,93	×2
✓ 20	26/9/1998	13th Angeles Crest 100 Mile	160,93	×2
✓ 21	27/6/1998	25th Western States 100 Mile Endurance Run	160,93	×2
✓ 22	27/9/1997	12th Angeles Crest 100 Mile	160,93	×2
✓ 23	11/7/1997	5th Hardrock Hundred Endurance Run	160,93	×2
✓ 24	28/9/1996	11th Angeles Crest 100 Mile	160,93	×2
✓ 25	24/9/1994	9th Angeles Crest 100 Mile	160,93	×2
✓ 26	30/3/2013	1st Coyote Cohorts Backbone Trail Ultra	109,44	×1
✓ 27	4/10/2014	3rd Cuyamaca 100 km Endurance Run	100,00	×1
✓ 28	3/5/2014	19th Miwok 100k Trail Race	100,00	×1
✓ 29	12/10/2013	2nd Cuyamaca 100 km Endurance Run	100,00	×1
✓ 30	21/8/2010	9th Where's Waldo 100K Ultramarathon	100,00	×1
✓ 31	1/5/2010	15th Miwok 100k Trail race	100,00	×1
✓ 32	2/5/2009	14th Miwok 100k Trail race	100,00	×1
✓ 33	21/3/2008	1st Coyote Two Moon Ultras 100 km	100,00	×1
✓ 34	5/5/2007	12th Miwok 100k Trail race	100,00	×1
✓ 35	6/5/2006	11th Miwok 100k Trail race	100,00	×1
✓ 36	30/4/2005	10th Miwok 100k Trail race	100,00	×1
✓ 37	1/5/2004	9th Miwok 100k Trail race	100,00	×1
✓ 38	5/5/2001	6th Miwok 100k Trail race	100,00	×1
✓ 39	24/2/2001	5th Catalina 100K Trail Run	100,00	×1
✓ 40	6/5/2000	5th Miwok 100k Trail race	100,00	×1
✓ 41	26/2/2000	4th Catalina 100K Trail Run	100,00	×1
✓ 42	27/2/1999	3rd Catalina 100K Trail Run	100,00	×1
✓ 43	22/4/2017	25th Leona Divide 50 Mile Run	80,47	×1
✓ 44	1/4/2017	11th Old Goat's 50 Mile Trail Race	80,47	×1
✓ 45	9/5/2015	12th PCT 50 Mile Trail Run	80,47	×1
✓ 46	25/4/2015	26th Zane Grey 50 Mile Endurance Run	80,47	×1
✓ 47	1/2/2014	1st Sean O'Brien 50 Mile Trail Race	80,47	×1
✓ 48	2/2/2013	2nd Ray Miller 50 Mile Trail Race	80,47	×1
✓ 49	24/3/2012	6th Old Goat's 50 Mile Trail Race	80,47	×1
✓ 50	25/2/2012	1st Ray Miller 50 Mile Trail Race	80,47	×1
✓ 51	16/4/2011	22nd Zane Grey 50 Mile Endurance Run	80,47	×1
✓ 52	22/5/2010	5th Jemez Mountain 50mi Trail Run	80,47	×1
✓ 53	6/3/2010	20th Old Pueblo 50 Mile Endurance Run	80,47	×1
✓ 54	4/4/2009	30th American River 50 Mile Endurance Run	80,47	×1
✓ 55	19/4/2008	16th Leona Divide 50 Mile Run	80,47	×1
✓ 56	14/4/2007	15th Bull Run Run 50 Miler	80,47	×1
✓ 57	8/4/2006	14th Bull Run Run 50 Miler	80,47	×1
✓ 58	9/4/2005	13th Bull Run Run 50 Miler	80,47	×1
✓ 59	17/4/2004	12th Bull Run Run 50 Miler	80,47	×1
✓ 60	12/4/2003	11th Bull Run Run 50 Miler	80,47	×1
✓ 61	12/4/2002	10th Bull Run Run 50 Miler	80,47	×1
✓ 62	14/4/2001	10th Leona Divide 50 Mile Run	80,47	×1
✓ 63	13/1/2001	21st Avalon Benefit 50-Mile Run	80,47	×1
✓ 64	15/4/2000	9th Leona Divide 50 Mile Run	80,47	×1
✓ 65	4/12/1999	10th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 66	15/5/1999	6th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 67	17/4/1999	8th Leona Divide 50 Mile Run	80,47	×1
✓ 68	21/3/1999	2nd Smuggler's 50 Miles	80,47	×1
✓ 69	8/11/1998	PCT 50 Mile Run	80,47	×1
✓ 70	16/5/1998	6th Lost Boys 50 Mile Trail Run	80,47	×1
✓ 71	25/4/1998	7th Leona Divide 50 Mile Run	80,47	×1
✓ 72	15/2/1998	1st Smuggler's 50 Miles	80,47	×1
✓ 73	17/5/1997	4th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 74	19/4/1997	6th Leona Divide 50 Mile Run	80,47	×1
✓ 75	9/11/1996	13th San Juan Trail 50 Mile	80,47	×1
✓ 76	18/5/1996	5th Lost Boys 50 Mile Trail Run	80,47	×1
✓ 77	20/4/1996	5th Leona Divide 50 Mile Run	80,47	×1
78	14/6/2003	1st Highlands Sky 40M Trail Run	64,37	—
79	4/5/2013	18th Miwok 60k Trail race	60,00	—
80	7/6/1998	2nd Holcomb Valley 33 Mile	53,11	—
81	25/8/2018	19th Tamalpa Headlands 50K	50,69	—
82	9/7/2016	11th Angeles National Forest 50k Trail Race	50,00	—
83	16/3/2013	30th San Juan Trail 50 km	50,00	—
84	28/10/2012	5th Lake Hodges Trail Fest 50K	50,00	—
85	22/10/2011	2nd Los Pinos 50K	50,00	—
86	25/9/2010	4th Noble Canyon 50k	50,00	—
87	26/9/2009	3rd Noble Canyon 50k	50,00	—
88	31/3/2007	4th Lake Hodges Trail Fest 50K	50,00	—
89	3/2/2007	1st Twin Peaks 50K	50,00	—
90	4/11/2006	23th San Juan Trail 50 km	50,00	—
91	18/3/2006	19th Crown King Scramble 50K	50,00	—
92	11/3/2006	3rd Lake Hodges Trail Fest 50K	50,00	—
93	4/12/2005	19th OTHTC High Desert 50K Ultra	50,00	—
94	26/3/2005	22th San Juan Trail 50 km	50,00	—
95	15/5/2004	6th Capon Valley 50K Run	50,00	—
96	27/3/2004	16th The HAT Run 50K	50,00	—
97	15/2/2004	9th Holiday Lake 50K++	50,00	—
98	14/12/2003	8th Magnus Gluteus Maximus - Tai Aon Yaon 50 km	50,00	—
99	2/8/2003	8th Catoctin 50k Trail Run	50,00	—
100	26/4/2003	3rd Promise Land 50K++	50,00	—
101	29/3/2003	15th The HAT Run 50K	50,00	—
102	11/2/2003	8th Holiday Lake 50K++	50,00	—
103	23/3/2002	14th The HAT Run 50K	50,00	—
104	3/2/2001	4th San Gabriel Mountain 50K	50,00	—
105	10/12/2000	14th OTHTC High Desert 50K Ultra	50,00	—
106	25/3/2000	17th San Juan Trail 50 km	50,00	—
107	29/1/2000	3rd San Gabriel Mountain 50K	50,00	—
108	6/12/1998	12th OTHTC High Desert 50K Ultra	50,00	—
109	15/3/1998	15th San Juan Trail 50 km	50,00	—
110	16/3/1997	14th San Juan Trail 50 km	50,00	—
111	8/9/1996	2nd Baldy Peaks 50K	50,00	—
112	1/6/1996	7th Shadow of the Giants 50K	50,00	—
113	22/10/1994	1st Cuyamaca-Laguna 50k Trail Race	50,00	—
114	20/8/1994	1st Baldy Peaks 50K	50,00	—
115	4/6/1994	5th Shadow of the Giants 50K	50,00	—
116	11/9/1993	2nd Bulldog 50k Ultra Run	50,00	—