Dan Williams

Born : 1949 Cat. M75 Ultrarunner since 1982

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

17,4%

Rank quotient ?This runner's calculation uses 82 eligible race(s): Σ(rank − 1) = 2 565; Σ finishers = 14 751. 2 565 / 14 751 × 100 = 17.39%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed82

Km — ultra races8 234 km

> 100 km27

> 160 km26

> 24h2

> 48h1

Longest race177,0 km

2nd Gibson Ranch 24-hour Classic — 28/12/1991

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road11,0%

Trail89,0%

Wins & podiums (ultra)

🏆 Win9

🏆 Win M9

🏅 Top 319

🏅 Top 3 M19

Longest winning streak2

Current streak0

Records

50 km3h33'45 100 km7h51'15 50 mi5h58'59 100 mi18h00'00 24 h177,03 km

HISTORY

82 race(s)

Date		Race	Perf.	Rk
2015
04.09	84h	1st A Race for the Ages	160.934 km	96
2011
25.06	100mi	38th Western States 100 Mile Endurance Run	29:47:25 h	303
30.04	50mi	19th Leona Divide 50 Mile Run	10:42:48 h	147
2010
26.06	100mi	37th Western States 100 Mile Endurance Run	27:48:59 h	214
15.05	50mi	25th Silver State 50 Mile	10:49:16 h	37
2009
27.06	100mi	36th Western States 100 Mile Endurance Run	29:45:39 h	229
04.04	50mi	30th American River 50 Mile Endurance Run	9:42:41 h	202
2008
13.09	100mi	22nd Angeles Crest 100 Mile	30:09:01 h	56
07.06	100mi	7th San Diego 100 Mile Endurance Run	28:18:00 h	29
2007
13.10	50mi	25th Dick Collins Firetrails 50 Mile	10:14:39 h	106
22.09	53.2mi	21st Sierra Nevada Endurance 53 Mile Run	10:08:41 h	10
2006
24.06	100mi	33th Western States 100 Mile Endurance Run	25:04:32 h	58
07.05	50mi	4th Diablo Endurance Run	11:44:12 h	3 🥉
2005
25.06	100mi	32th Western States 100 Mile Endurance Run	23:28:55 h	77
16.04	50mi	3rd Diablo Endurance Run	12:00:02 h	20
19.03	50km	3rd Rucky Chucky Roundabout 50K	6:07:10 h	32
05.02	50km	4th Woodside Trail Run 50K	5:57:52 h	31
2004
26.06	100mi	31th Western States 100 Mile Endurance Run	27:28:16 h	157
03.04	50mi	25th American River 50 Mile Endurance Run	8:45:06 h	68
21.03	50km	3rd Stevens Creek Striders 50K	5:37:08 h	13
2003
27.09	100mi	17th Angeles Crest 100 Mile	26:54:25 h	17
28.06	100mi	30th Western States 100 Mile Endurance Run	22:02:16 h	43
26.04	50mi	12th Leona Divide 50 Mile Run	8:36:51 h	15
22.03	50km	2nd Stevens Creek Striders 50K	5:45:38 h	9
2002
12.10	50mi	20th Dick Collins Firetrails 50 Mile	8:02:27 h	11
29.06	100mi	29th Western States 100 Mile Endurance Run	22:22:26 h	45
19.05	50km	15th Ohlone 50K Wilderness Run	5:51:04 h	18
20.04	50mi	11th Leona Divide 50 Mile Run	8:02:32 h	17
09.03	50km	13th Way Too Cool 50K Endurance Run	4:35:52 h	52
2001
29.09	100mi	16th Angeles Crest 100 Mile	23:14:30 h	8
21.07	50mi	1st Tahoe Rim Trail 50M Endurance Runs	9:53:01 h	12
19.05	50mi	8th Bishop High Sierra Ultramarathons 50 Miles	8:56:34 h	4
07.04	50mi	22nd American River 50 Mile Endurance Run	7:27:38 h	18
09.01	50km	Epiphany Ultras - The Popular But Wussy Metric	4:44:00 h	5
2000
24.06	100mi	27th Western States 100 Mile Endurance Run	21:17:10 h	18
01.04	50mi	21st American River 50 Mile Endurance Run	7:54:49 h	27
11.03	50km	11th Way Too Cool 50K Endurance Run	4:31:17 h	31
12.02	50km	22nd Jed Smith Ultra Classic - 50 km Race	3:56:03 h	13
11.01	49km	Epiphany Ultras - The Popular But Wussy Metric	4:33:00 h	3 🥉
1999
23.10	52.4mi	13th Sierra Nevada Endurance 52 Mile Run	9:24:18 h	18
26.06	100mi	26th Western States 100 Mile Endurance Run	21:44:40 h	24
13.02	50km	21st Jed Smith Ultra Classic - 50 km Race	3:39:11 h	9
1998
06.09	50mi	4th Run On The Sly 50 Mile	7:11:55 h	1 🏆
04.04	50mi	19th American River 50 Mile Endurance Run	6:58:36 h	22
1997
28.06	100mi	24th Western States 100 Mile Endurance Run	21:27:00 h	36
1996
30.11	28mi	12th Quad Dipsea Trail Run	5:22:29 h	40
01.09	50mi	2nd Run On The Sly 50 Mile	7:51:20 h	7
03.08	50km	15th Skyline 50k Endurance Run	4:32:12 h	14
1995
24.06	100mi	22nd Western States 100 Mile Endurance Run	23:08:51 h	25
1992
27.06	100mi	19th Western States 100 Mile Endurance Run	18:50:23 h	6
18.04	100km	7th Ruth Anderson Ultra 100km	7:51:15 h	2 🥈
04.04	50mi	13th American River 50 Mile Endurance Run	6:18:28 h	4
08.02	50mi	14th Jed Smith Ultra Classic - 50 Mile Race	6:15:27 h	1 🏆
1991
28.12	24h	2nd Gibson Ranch 24-hour Classic	177.027 km	3 🥉
30.11	28mi	7th Quad Dipsea Trail Run	4:18:42 h	1 🏆
11.10	50mi	9th Dick Collins Firetrails 50 Mile	8:03:30 h	6
29.06	100mi	18th Western States 100 Mile Endurance Run	18:58:42 h	16
1990
23.06	100mi	17th Western States 100 Mile Endurance Run	18:00:00 h	6
07.04	50mi	11th American River 50 Mile Endurance Run	6:17:24 h	9
11.02	50mi	12th Jed Smith Ultra Classic - 50 Mile Race	6:03:23 h	3 🥉
1989
24.06	100mi	16th Western States 100 Mile Endurance Run	18:03:51 h	8
1988
25.06	100mi	15th Western States 100 Mile Endurance Run	19:10:06 h	16
10.04	50mi	9th American River 50 Mile Endurance Run	6:14:22 h	2 🥈
1987
27.11	28mi	3rd Quad Dipsea Trail Run	4:00:02 h	1 🏆
10.10	50mi	5th Dick Collins Firetrails 50 Mile	6:55:36 h	1 🏆
27.06	100mi	14th Western States 100 Mile Endurance Run	18:58:40 h	3 🥉
12.04	50mi	8th American River 50 Mile Endurance Run	6:00:12 h	1 🏆
07.02	50km	9th Jed Smith Ultra Classic - 50 km Race	5:57:11 h	6
1986
16.11	50mi	3rd San Juan Trail 50 Mile	7:14:59 h	4
11.10	50mi	4th Dick Collins Firetrails 50 Mile	7:11:18 h	1 🏆
28.06	100mi	13th Western States 100 Mile Endurance Run	18:47:56 h	6
1985
06.07	100mi	12th Western States 100 Mile Endurance Run	19:08:36 h	12
11.05	50mi	2nd Quicksilver 50 Mile Endurance Run	7:19:16 h	3 🥉
06.04	52.4mi	The Forty-Niner Double Marathon Trail Run	7:22:43 h	4
09.02	50mi	7th Jed Smith Ultra Classic - 50 Mile Race	5:58:59 h	3 🥉
1984
05.08	50km	3rd Skyline 50k Endurance Run	4:45:53 h	43
23.06	93.5mi	11th Western States 100 Mile Endurance Run	18:52:00 h	11
28.04	100km	Steamroller Ultra	10:47:28 h	2 🥈
11.02	50mi	6th Jed Smith Ultra Classic - 50 Mile Race	6:03:24 h	1 🏆
1983
07.08	50km	2nd Skyline 50k Endurance Run	4:11:58 h	5
17.04	50mi	4th American River 50 Mile Endurance Run	6:14:05 h	6
1982
01.08	50km	1st Skyline 50k Endurance Run	3:33:45 h	1 🏆

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	28/12/1991	2nd Gibson Ranch 24-hour Classic	177,03	×2
✓ 2	25/6/2011	38th Western States 100 Mile Endurance Run	160,93	×2
✓ 3	26/6/2010	37th Western States 100 Mile Endurance Run	160,93	×2
✓ 4	27/6/2009	36th Western States 100 Mile Endurance Run	160,93	×2
✓ 5	13/9/2008	22nd Angeles Crest 100 Mile	160,93	×2
✓ 6	7/6/2008	7th San Diego 100 Mile Endurance Run	160,93	×2
✓ 7	24/6/2006	33th Western States 100 Mile Endurance Run	160,93	×2
✓ 8	25/6/2005	32th Western States 100 Mile Endurance Run	160,93	×2
✓ 9	26/6/2004	31th Western States 100 Mile Endurance Run	160,93	×2
✓ 10	27/9/2003	17th Angeles Crest 100 Mile	160,93	×2
✓ 11	28/6/2003	30th Western States 100 Mile Endurance Run	160,93	×2
✓ 12	29/6/2002	29th Western States 100 Mile Endurance Run	160,93	×2
✓ 13	29/9/2001	16th Angeles Crest 100 Mile	160,93	×2
✓ 14	24/6/2000	27th Western States 100 Mile Endurance Run	160,93	×2
✓ 15	26/6/1999	26th Western States 100 Mile Endurance Run	160,93	×2
✓ 16	28/6/1997	24th Western States 100 Mile Endurance Run	160,93	×2
✓ 17	24/6/1995	22nd Western States 100 Mile Endurance Run	160,93	×2
✓ 18	27/6/1992	19th Western States 100 Mile Endurance Run	160,93	×2
✓ 19	29/6/1991	18th Western States 100 Mile Endurance Run	160,93	×2
✓ 20	23/6/1990	17th Western States 100 Mile Endurance Run	160,93	×2
✓ 21	24/6/1989	16th Western States 100 Mile Endurance Run	160,93	×2
✓ 22	25/6/1988	15th Western States 100 Mile Endurance Run	160,93	×2
✓ 23	27/6/1987	14th Western States 100 Mile Endurance Run	160,93	×2
✓ 24	28/6/1986	13th Western States 100 Mile Endurance Run	160,93	×2
✓ 25	6/7/1985	12th Western States 100 Mile Endurance Run	160,93	×2
✓ 26	4/9/2015	1st A Race for the Ages	160,93	×2
✓ 27	23/6/1984	11th Western States 100 Mile Endurance Run	150,47	×1
✓ 28	18/4/1992	7th Ruth Anderson Ultra 100km	100,00	×1
✓ 29	28/4/1984	Steamroller Ultra	100,00	×1
✓ 30	22/9/2007	21st Sierra Nevada Endurance 53 Mile Run	85,62	×1
✓ 31	23/10/1999	13th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 32	6/4/1985	The Forty-Niner Double Marathon Trail Run	84,33	×1
✓ 33	30/4/2011	19th Leona Divide 50 Mile Run	80,47	×1
✓ 34	15/5/2010	25th Silver State 50 Mile	80,47	×1
✓ 35	4/4/2009	30th American River 50 Mile Endurance Run	80,47	×1
✓ 36	13/10/2007	25th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 37	7/5/2006	4th Diablo Endurance Run	80,47	×1
✓ 38	16/4/2005	3rd Diablo Endurance Run	80,47	×1
✓ 39	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 40	26/4/2003	12th Leona Divide 50 Mile Run	80,47	×1
✓ 41	12/10/2002	20th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 42	20/4/2002	11th Leona Divide 50 Mile Run	80,47	×1
✓ 43	21/7/2001	1st Tahoe Rim Trail 50M Endurance Runs	80,47	×1
✓ 44	19/5/2001	8th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 45	7/4/2001	22nd American River 50 Mile Endurance Run	80,47	×1
✓ 46	1/4/2000	21st American River 50 Mile Endurance Run	80,47	×1
✓ 47	6/9/1998	4th Run On The Sly 50 Mile	80,47	×1
✓ 48	4/4/1998	19th American River 50 Mile Endurance Run	80,47	×1
✓ 49	1/9/1996	2nd Run On The Sly 50 Mile	80,47	×1
✓ 50	4/4/1992	13th American River 50 Mile Endurance Run	80,47	×1
✓ 51	8/2/1992	14th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 52	11/10/1991	9th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 53	7/4/1990	11th American River 50 Mile Endurance Run	80,47	×1
✓ 54	11/2/1990	12th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 55	10/4/1988	9th American River 50 Mile Endurance Run	80,47	×1
✓ 56	10/10/1987	5th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 57	12/4/1987	8th American River 50 Mile Endurance Run	80,47	×1
✓ 58	16/11/1986	3rd San Juan Trail 50 Mile	80,47	×1
✓ 59	11/10/1986	4th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 60	11/5/1985	2nd Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 61	9/2/1985	7th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 62	11/2/1984	6th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 63	17/4/1983	4th American River 50 Mile Endurance Run	80,47	×1
64	19/3/2005	3rd Rucky Chucky Roundabout 50K	50,00	—
65	5/2/2005	4th Woodside Trail Run 50K	50,00	—
66	21/3/2004	3rd Stevens Creek Striders 50K	50,00	—
67	22/3/2003	2nd Stevens Creek Striders 50K	50,00	—
68	19/5/2002	15th Ohlone 50K Wilderness Run	50,00	—
69	9/3/2002	13th Way Too Cool 50K Endurance Run	50,00	—
70	9/1/2001	Epiphany Ultras - The Popular But Wussy Metric	50,00	—
71	11/3/2000	11th Way Too Cool 50K Endurance Run	50,00	—
72	12/2/2000	22nd Jed Smith Ultra Classic - 50 km Race	50,00	—
73	13/2/1999	21st Jed Smith Ultra Classic - 50 km Race	50,00	—
74	3/8/1996	15th Skyline 50k Endurance Run	50,00	—
75	7/2/1987	9th Jed Smith Ultra Classic - 50 km Race	50,00	—
76	5/8/1984	3rd Skyline 50k Endurance Run	50,00	—
77	7/8/1983	2nd Skyline 50k Endurance Run	50,00	—
78	1/8/1982	1st Skyline 50k Endurance Run	50,00	—
79	11/1/2000	Epiphany Ultras - The Popular But Wussy Metric	49,00	—
80	30/11/1996	12th Quad Dipsea Trail Run	45,06	—
81	30/11/1991	7th Quad Dipsea Trail Run	45,06	—
82	27/11/1987	3rd Quad Dipsea Trail Run	45,06	—