William Dodson

Born : 1935 Cat. M90 Ultrarunner since 1997

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

63,7%

Rank quotient ?This runner's calculation uses 89 eligible race(s): Σ(rank − 1) = 10 841; Σ finishers = 17 015. 10 841 / 17 015 × 100 = 63.71%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed89

Km — ultra races6 057 km

> 100 km6

> 160 km3

> 200 km1

> 24h5

> 48h2

Longest race201,2 km

2nd A Race for the Ages — 1/9/2016

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road32,9%

Trail67,1%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M2

Longest winning streak0

Current streak0

Records

50 km5h12'50 100 km15h05'47 50 mi7h38'52 100 mi23h01'39 6 h47,81 km 12 h80,56 km 24 h145,14 km

HISTORY

89 race(s) · 1 split(s) nested

Date		Race	Perf.	Rk
2017
06.08	50km	36th Skyline 50k Endurance Run	9:10:38 h	196
23.04	50km	31th Ruth Anderson Ultra 50km	6:57:11 h	21
25.02	24h	2nd Riverbank One Day - 24hrs run	123.000 km	21
2016
01.09	85h	2nd A Race for the Ages	201.168 km	41
07.08	50km	35th Skyline 50k Endurance Run	7:26:01 h	130
16.04	50km	30th Ruth Anderson Ultra 50km	6:06:33 h	19
18.03	12h	1st Riverbank One Day - 12hrs run	70.650 km	5
06.02	50km	38th Jed Smith Ultra Classic - 50 km Race	5:48:06 h	49
2015
08.08	50km	34th Skyline 50k Endurance Run	7:04:14 h	120
20.06	6h	3rd San Francisco Summer Solstice 6h	47.810 km	15
18.04	50mi	29th Ruth Anderson Ultra 50mi	10:16:17 h	10
11.04	100km	9th Mad City 100K Road Race	15:05:47 h	15
07.03	50km	26th Way Too Cool 50K Endurance Run	7:11:09 h	788
01.03	50km	13th Caumsett Park 50K Lloyd Neck - Championships	5:55:07 h	58
2014
31.12	12h	5th New Years One Day 12 Hour Run	80.555 km	15
23.08	31.5mi	15th Tamalpa Headlands 50K	8:16:57 h	170
03.08	50km	33rd Skyline 50k Endurance Run	7:03:01 h	143
19.04	50mi	28th Ruth Anderson Ultra 50mi	10:38:46 h	23
08.03	50km	25th Way Too Cool 50K Endurance Run	6:40:59 h	688
01.02	50km	36th Jed Smith Ultra Classic - 50 km Race	5:31:43 h	55
2013
31.12	6h	4th New Years One Day 6 Hour Run	47.810 km	22
12.10	50mi	31st Dick Collins Firetrails 50 Mile	12:47:14 h	274
24.08	31.5mi	14th Tamalpa Headlands 50K	7:32:11 h	151
17.08	100km	3rd Run-de-Vous 100 km Endurance Run	15:25:00 h	3 🥉
11.08	50km	32nd Skyline 50k Endurance Run	6:20:10 h	157
19.05	50km	26th Ohlone 50K Wilderness Run	9:01:39 h	142
06.04	50mi	34th American River 50 Mile Endurance Run	11:01:00 h	542
09.03	50km	24th Way Too Cool 50K Endurance Run	6:23:53 h	570
02.02	50km	35th Jed Smith Ultra Classic - 50 km Race	5:13:11 h	52
2012
29.12	72h	29th Across the Years, 72h	81.096 km	64
28.10	50km	1st Folsom Lake Trail Run - Fall 50K	6:40:28 h	23
25.08	31.5mi	13th Tamalpa Headlands 50K	7:38:35 h	136
12.08	50km	31st Skyline 50k Endurance Run	6:32:17 h	135
12.05	50km	29th Quicksilver 50 km Endurance Run	7:09:01 h	83
21.04	50km	26th Ruth Anderson Ultra 50km	5:29:45 h	15
07.04	50mi	33rd American River 50 Mile Endurance Run	11:52:31 h	563
10.03	50km	23rd Way Too Cool 50K Endurance Run	6:25:01 h	490
04.02	50km	34th Jed Smith Ultra Classic - 50 km Race	5:32:40 h	50
2011
31.12	24h	2nd New Years One Day 24 Hour Run	145.138 km	14
26.11	28mi	27th Quad Dipsea Trail Run	7:52:54 h	200
12.11	50km	1st Last Chance 50 km	6:03:46 h	22
08.10	50mi	29th Dick Collins Firetrails 50 Mile	12:02:43 h	169
07.08	50km	30th Skyline 50k Endurance Run	6:26:22 h	105
23.04	50mi	25th Ruth Anderson Ultra 50mi	9:09:49 h	9
23.04	50km	25th Ruth Anderson Ultra 50mi - 50km Split	5:34:31 h	10
09.04	50mi	32nd American River 50 Mile Endurance Run	10:56:31 h	391
12.03	50km	22nd Way Too Cool 50K Endurance Run	6:30:18 h	369
05.02	50km	33rd Jed Smith Ultra Classic - 50 km Race	5:21:11 h	24
2010
31.12	24h	1st New Years One Day 24 Hour Run	121.233 km	13
06.11	50mi	15th Helen Klein Ultra Classic 50 Mile	11:05:52 h	67
23.10	50km	11th Whiskeytown 50km Trail Run	7:34:42 h	26
08.05	50mi	27th Quicksilver 50 Mile Endurance Run	12:09:14 h	74
10.04	50mi	31st American River 50 Mile Endurance Run	9:57:55 h	264
13.03	50km	21st Way Too Cool 50K Endurance Run	7:20:15 h	370
06.02	50km	32nd Jed Smith Ultra Classic - 50 km Race	5:23:07 h	27
2009
28.11	28mi	25th Quad Dipsea Trail Run	7:09:47 h	149
31.10	50mi	14th Helen Klein Ultra Classic 50mi	9:34:15 h	46
10.10	50mi	27th Dick Collins Firetrails 50 Mile	11:10:11 h	171
26.09	53.2mi	23rd Sierra Nevada Endurance 53 Mile Run	14:06:51 h	24
12.09	50km	8th Stevens Creek Striders 50K	6:49:25 h	22
02.08	50km	28th Skyline 50k Endurance Run	5:52:34 h	74
09.05	50mi	26th Quicksilver 50 Mile Endurance Run	11:06:36 h	57
18.04	50km	23th Ruth Anderson Ultra 50km	5:20:50 h	16
04.04	50mi	30th American River 50 Mile Endurance Run	9:54:06 h	222
14.03	50km	20th Way Too Cool 50K Endurance Run	6:27:57 h	301
07.02	50km	31st Jed Smith Ultra Classic - 50 km Race	5:12:50 h	41
2008
29.11	28mi	24th Quad Dipsea Trail Run	6:48:24 h	154
01.11	50mi	13th Helen Klein Ultra Classic 50mi	8:54:36 h	19
11.10	50mi	26th Dick Collins Firetrails 50 Mile	10:16:14 h	83
23.08	31.5mi	11th Tamalpa Headlands 50K	6:41:34 h	41
03.08	50km	27th Skyline 50k Endurance Run	5:56:15 h	63
10.05	50km	25th Quicksilver 50 km Endurance Run	5:54:02 h	31
08.03	50km	19th Way Too Cool 50K Endurance Run	5:51:00 h	224
2007
24.11	28mi	23rd Quad Dipsea Trail Run	6:56:11 h	168
13.10	50mi	25th Dick Collins Firetrails 50 Mile	10:27:26 h	115
26.08	31.5mi	10th Tamalpa Headlands 50K	6:36:17 h	82
21.07	50km	6th Tahoe Rim Trail 50km Endurance Runs	7:29:13 h	56
2002
13.07	50km	4th Siskiyou Out Back 50 km Trail Run	6:07:12 h	40
2001
20.10	50mi	17th Palo Duro 50 Mile Trail Run	11:35:10 h	22
2000
08.07	48.6km	2nd Siskiyou Out Back 50 km Trail Run	4:59:34 h	28
13.05	50mi	19th Ice Age Trail 50 Mile Run	8:44:23 h	76
1999
13.11	50mi	4th Helen Klein Ultra Classic 50mi	7:38:52 h	27
02.10	50mi	16th Man Against Horse 50 Mile Race	9:24:00 h	8
26.06	100mi	26th Western States 100 Mile Endurance Run	28:18:10 h	151
08.05	50mi	17th BB 50 Mile Ultramarathon	8:58:11 h	4
06.02	100mi	7th Rocky Raccoon 100 Mile Trail Run	23:01:39 h	25
1998
20.06	50mi	4th San Juan Solstice 50 Mile Run	13:03:25 h	19
04.04	50mi	19th American River 50 Mile Endurance Run	8:24:30 h	93
1997
29.11	35mi	6th Santa Barbara Nine Trails 35 Mile Endurance Run	10:08:01 h	32
15.11	50mi	2nd Helen Klein Ultra Classic 50mi	8:43:28 h	48

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	1/9/2016	2nd A Race for the Ages	201,17	×4
✓ 2	26/6/1999	26th Western States 100 Mile Endurance Run	160,93	×3
✓ 3	6/2/1999	7th Rocky Raccoon 100 Mile Trail Run	160,93	×3
✓ 4	31/12/2011	2nd New Years One Day 24 Hour Run	145,14	×2
✓ 5	25/2/2017	2nd Riverbank One Day - 24hrs run	123,00	×2
✓ 6	31/12/2010	1st New Years One Day 24 Hour Run	121,23	×2
✓ 7	11/4/2015	9th Mad City 100K Road Race	100,00	×2
✓ 8	17/8/2013	3rd Run-de-Vous 100 km Endurance Run	100,00	×2
✓ 9	26/9/2009	23rd Sierra Nevada Endurance 53 Mile Run	85,62	×1
✓ 10	29/12/2012	29th Across the Years, 72h	81,10	×1
✓ 11	31/12/2014	5th New Years One Day 12 Hour Run	80,56	×1
✓ 12	18/4/2015	29th Ruth Anderson Ultra 50mi	80,47	×1
✓ 13	19/4/2014	28th Ruth Anderson Ultra 50mi	80,47	×1
✓ 14	12/10/2013	31st Dick Collins Firetrails 50 Mile	80,47	×1
✓ 15	6/4/2013	34th American River 50 Mile Endurance Run	80,47	×1
✓ 16	7/4/2012	33rd American River 50 Mile Endurance Run	80,47	×1
✓ 17	8/10/2011	29th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 18	23/4/2011	25th Ruth Anderson Ultra 50mi	80,47	×1
✓ 19	9/4/2011	32nd American River 50 Mile Endurance Run	80,47	×1
✓ 20	6/11/2010	15th Helen Klein Ultra Classic 50 Mile	80,47	×1
✓ 21	8/5/2010	27th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 22	10/4/2010	31st American River 50 Mile Endurance Run	80,47	×1
✓ 23	31/10/2009	14th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 24	10/10/2009	27th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 25	9/5/2009	26th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 26	4/4/2009	30th American River 50 Mile Endurance Run	80,47	×1
✓ 27	1/11/2008	13th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 28	11/10/2008	26th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 29	13/10/2007	25th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 30	20/10/2001	17th Palo Duro 50 Mile Trail Run	80,47	×1
✓ 31	13/5/2000	19th Ice Age Trail 50 Mile Run	80,47	×1
✓ 32	13/11/1999	4th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 33	2/10/1999	16th Man Against Horse 50 Mile Race	80,47	×1
✓ 34	8/5/1999	17th BB 50 Mile Ultramarathon	80,47	×1
✓ 35	20/6/1998	4th San Juan Solstice 50 Mile Run	80,47	×1
✓ 36	4/4/1998	19th American River 50 Mile Endurance Run	80,47	×1
✓ 37	15/11/1997	2nd Helen Klein Ultra Classic 50mi	80,47	×1
✓ 38	18/3/2016	1st Riverbank One Day - 12hrs run	70,65	×1
✓ 39	29/11/1997	6th Santa Barbara Nine Trails 35 Mile Endurance Run	56,33	×1
✓ 40	23/8/2014	15th Tamalpa Headlands 50K	50,69	×1
✓ 41	24/8/2013	14th Tamalpa Headlands 50K	50,69	×1
✓ 42	25/8/2012	13th Tamalpa Headlands 50K	50,69	×1
✓ 43	23/8/2008	11th Tamalpa Headlands 50K	50,69	×1
✓ 44	26/8/2007	10th Tamalpa Headlands 50K	50,69	×1
✓ 45	6/8/2017	36th Skyline 50k Endurance Run	50,00	×1
✓ 46	23/4/2017	31th Ruth Anderson Ultra 50km	50,00	×1
✓ 47	7/8/2016	35th Skyline 50k Endurance Run	50,00	×1
✓ 48	16/4/2016	30th Ruth Anderson Ultra 50km	50,00	×1
✓ 49	6/2/2016	38th Jed Smith Ultra Classic - 50 km Race	50,00	×1
✓ 50	8/8/2015	34th Skyline 50k Endurance Run	50,00	×1
51	7/3/2015	26th Way Too Cool 50K Endurance Run	50,00	×1
52	1/3/2015	13th Caumsett Park 50K Lloyd Neck - Championships	50,00	×1
53	3/8/2014	33rd Skyline 50k Endurance Run	50,00	×1
54	8/3/2014	25th Way Too Cool 50K Endurance Run	50,00	×1
55	1/2/2014	36th Jed Smith Ultra Classic - 50 km Race	50,00	×1
56	11/8/2013	32nd Skyline 50k Endurance Run	50,00	×1
57	19/5/2013	26th Ohlone 50K Wilderness Run	50,00	×1
58	9/3/2013	24th Way Too Cool 50K Endurance Run	50,00	×1
59	2/2/2013	35th Jed Smith Ultra Classic - 50 km Race	50,00	×1
60	28/10/2012	1st Folsom Lake Trail Run - Fall 50K	50,00	×1
61	12/8/2012	31st Skyline 50k Endurance Run	50,00	×1
62	12/5/2012	29th Quicksilver 50 km Endurance Run	50,00	×1
63	21/4/2012	26th Ruth Anderson Ultra 50km	50,00	×1
64	10/3/2012	23rd Way Too Cool 50K Endurance Run	50,00	×1
65	4/2/2012	34th Jed Smith Ultra Classic - 50 km Race	50,00	×1
66	12/11/2011	1st Last Chance 50 km	50,00	×1
67	7/8/2011	30th Skyline 50k Endurance Run	50,00	×1
68	12/3/2011	22nd Way Too Cool 50K Endurance Run	50,00	×1
69	5/2/2011	33rd Jed Smith Ultra Classic - 50 km Race	50,00	×1
70	23/10/2010	11th Whiskeytown 50km Trail Run	50,00	×1
71	13/3/2010	21st Way Too Cool 50K Endurance Run	50,00	×1
72	6/2/2010	32nd Jed Smith Ultra Classic - 50 km Race	50,00	×1
73	12/9/2009	8th Stevens Creek Striders 50K	50,00	×1
74	2/8/2009	28th Skyline 50k Endurance Run	50,00	×1
75	18/4/2009	23th Ruth Anderson Ultra 50km	50,00	×1
76	14/3/2009	20th Way Too Cool 50K Endurance Run	50,00	×1
77	7/2/2009	31st Jed Smith Ultra Classic - 50 km Race	50,00	×1
78	3/8/2008	27th Skyline 50k Endurance Run	50,00	×1
79	10/5/2008	25th Quicksilver 50 km Endurance Run	50,00	×1
80	8/3/2008	19th Way Too Cool 50K Endurance Run	50,00	×1
81	21/7/2007	6th Tahoe Rim Trail 50km Endurance Runs	50,00	×1
82	13/7/2002	4th Siskiyou Out Back 50 km Trail Run	50,00	×1
83	8/7/2000	2nd Siskiyou Out Back 50 km Trail Run	48,60	—
84	20/6/2015	3rd San Francisco Summer Solstice 6h	47,81	—
85	31/12/2013	4th New Years One Day 6 Hour Run	47,81	—
86	26/11/2011	27th Quad Dipsea Trail Run	45,06	—
87	28/11/2009	25th Quad Dipsea Trail Run	45,06	—
88	29/11/2008	24th Quad Dipsea Trail Run	45,06	—
89	24/11/2007	23rd Quad Dipsea Trail Run	45,06	—