Donald Clark

ID 19581

Born : 1951 Cat. M75 Ultrarunner since 1994

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

South Africa

United States

89,3%

Rank quotient ?This runner's calculation uses 81 eligible race(s): Σ(rank − 1) = 17 453; Σ finishers = 19 540. 17 453 / 19 540 × 100 = 89.32%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed81

Km — ultra races7 447 km

> 100 km24

> 160 km20

> 24h7

Longest race162,6 km

10th FANS 24 Hour Runs — 26/6/1999

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road20,4%

Trail79,6%

Records

50 km5h45'59 100 km12h32'48 50 mi9h21'04 100 mi25h05'37 24 h162,59 km

HISTORY

81 race(s)

Date		Race	Perf.	Rk
2009
17.10	50km	1st Wild Duluth 50 km Races	9:52:24 h	55
18.07	50km	8th Tahoe Rim Trail 50km Endurance Runs	12:17:52 h	156
14.03	60km	6th Land Between The Lakes 60 km Trail Run	10:04:03 h	91
2008
12.10	50km	22nd Glacial Trail 50 km Race	8:44:12 h	65
05.07	50km	15th Afton Trail Run 50K	9:52:10 h	130
07.06	24h	19th FANS 24 Hour Runs	80.612 km	62
2007
29.12	50km	11th Huff 50K Trail Run	7:48:01 h	135
14.10	50km	21st Glacial Trail 50 km Race	7:01:36 h	70
2006
09.12	50km	17th Sunmart Texas Trails 50 km	6:38:56 h	254
10.11	100mi	1st Mother Road 100 Mile	27:03:00 h	78
08.10	50km	20th Glacial Trail 50 km Race	7:52:30 h	93
26.08	50mi	2nd Lean Horse Ultra-Marathon 50 Mile	13:48:25 h	35
03.06	24h	17th FANS 24 Hour Runs	127.379 km	42
18.02	100mi	8th Susitna 100 Mile	41:09:00 h	15
2005
27.05	100mi	13th Sulphur Springs Trail Run 100mi	29:05:01 h	23
16.04	50mi	5th McNaughton 50 Mile Ultra Race	17:00:01 h	38
19.02	100mi	7th Susitna 100 Mile	25:23:19 h	12
2004
18.12	50km	8th Huff 50K Trail Run	6:56:28 h	191
02.10	100mi	14th Arkansas Traveller 100	29:49:12 h	78
07.08	50km	3rd Big Basin Redwoods Trail Run	8:39:50 h	25
24.07	50mi	23rd Minnesota Voyageur Trail 50 Mile Ultra	12:56:56 h	77
2003
08.11	100mi	1st Javelina Jundred 100 Mile	28:00:50 h	53
11.10	50mi	4th Tussey Mountainback 50 Miler	10:26:16 h	15
20.09	50km	1st Great Eastern Endurance Run 50 km	7:33:01 h	131
05.07	50km	10th Afton Trail Run 50K	9:38:00 h	57
07.06	24h	14th FANS 24 Hour Runs	127.379 km	36
2002
19.10	100km	16th Edmund Fitzgerald 100K Road Race	13:09:18 h	46
20.07	100mi	14th Vermont 100 Mile Endurance Race	27:34:02 h	153
06.07	50km	9th Afton Trail Run 50K	8:30:00 h	73
01.06	100mi	7th Kettle Moraine 100 Mile Endurance Run	28:51:07 h	32
11.05	50mi	21th Ice Age Trail 50 Mile Run	11:49:39 h	229
2001
20.10	100km	15th Edmund Fitzgerald 100K Road Race	12:32:48 h	27
21.07	100mi	13th Vermont 100 Mile Endurance Race	28:10:37 h	160
07.07	50km	8th Afton Trail Run 50K	9:41:00 h	61
23.06	24h	12th FANS 24 Hour Runs	105.476 km	52
21.04	50km	12th Trail Mix Race	7:15:25 h	90
07.04	50km	3rd Double Chubb 50k	6:47:06 h	39
2000
04.11	50mi	8th OPSF Ultra 50 Mile Race	10:33:25 h	20
14.10	50mi	19th Le Grizz 50 Mile Ultramarathon	10:34:12 h	43
09.09	100mi	10th Superior Fall Trail Races 100 Mile	33:40:25 h	26
29.07	50mi	19th Minnesota Voyageur Trail 50 Mile Ultra	12:30:54 h	77
08.07	50km	7th Afton Trail Run 50K	8:30:51 h	56
22.04	50km	11th Trail Mix Race	6:20:54 h	86
08.04	100mi	6th Umstead Endurance Run 100 Miles	27:50:36 h	40
19.02	100mi	3rd Susitna 100 Mile	41:41:00 h	37
1999
18.12	50km	3rd Huff 50K Trail Run	7:31:45 h	158
04.12	50mi	7th Kentucky Arches 50 Mile	9:21:04 h	26
11.09	100mi	9th Superior Fall Trail Races 100 Mile	33:42:15 h	36
26.06	24h	10th FANS 24 Hour Runs	162.592 km	10
04.06	100mi	4th Kettle Moraine 100 Mile Endurance Run	27:36:23 h	55
17.04	50km	10th Trail Mix Race	6:18:16 h	82
10.04	50km	1st Double Chubb 50k	6:41:04 h	44
06.02	100mi	7th Rocky Raccoon 100 Mile Trail Run	25:05:37 h	41
1998
02.08	50mi	3rd Resurrection Pass 50 Mile Ultra Trail Race	12:24:57 h	15
25.07	50mi	17th Minnesota Voyageur Trail 50 Mile Ultra	11:53:09 h	72
04.07	50km	5th Afton Trail Run 50K	7:16:20 h	70
27.06	24h	9th FANS 24 Hour Runs	161.417 km	14
05.06	100mi	3rd Kettle Moraine 100 Mile Endurance Run	26:28:20 h	48
16.05	50mi	17th Ice Age Trail 50 Mile Run	11:40:16 h	301
18.04	50km	9th Trail Mix Race	6:05:36 h	114
04.04	100mi	4th Umstead Endurance Run 100 Miles	26:30:26 h	44
1997
13.12	50mi	8th Sunmart Texas Trails 50 Mile	10:21:30 h	207
20.09	100mi	7th Superior Fall Trail Races 100 Mile	32:30:09 h	35
26.07	50mi	16th Minnesota Voyageur Trail 50 Mile Ultra	12:32:24 h	79
05.07	50km	4th Afton Trail Run 50K	6:27:25 h	68
16.06	89km	72nd Comrades Marathon - Down Run	10:57:54 h	11217
17.05	50mi	16th Ice Age Trail 50 Mile Run	10:16:51 h	222
1996
23.11	50mi	34th JFK 50 Mile	10:39:48 h	366
02.11	50mi	4th OPSF Ultra 50 Mile Race	11:59:17 h	23
19.10	100km	12th Edmund Fitzgerald 100K Road Race	12:44:34 h	52
27.07	50mi	15th Minnesota Voyageur Trail 50 Mile Ultra	12:38:35 h	75
06.07	50km	3rd Afton Trail Run 50K	6:51:11 h	50
29.06	24h	7th FANS 24 Hour Runs	122.792 km	34
13.04	50mi	4th Bull Run Run 50 Miler	12:27:54 h	114
02.03	50mi	16th Carl Touchstone Memorial Mississippi Trail 50 Mile	10:04:00 h	10
1995
04.11	46mi	13th Pine Mountain Trail Run	11:28:43 h	25
30.09	50km	1st Flatrock 50K	8:44:36 h	17
01.07	50km	2nd Afton Trail Run 50K	5:59:05 h	41
13.05	50mi	14th Ice Age Trail 50 Mile Run	11:18:13 h	258
25.03	50km	9th Crown King Scramble 50K	7:31:06 h	106
1994
02.07	50km	1st Afton Trail Run 50K	5:45:59 h	41

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	26/6/1999	10th FANS 24 Hour Runs	162,59	×2
✓ 2	27/6/1998	9th FANS 24 Hour Runs	161,42	×2
✓ 3	10/11/2006	1st Mother Road 100 Mile	160,93	×2
✓ 4	18/2/2006	8th Susitna 100 Mile	160,93	×2
✓ 5	27/5/2005	13th Sulphur Springs Trail Run 100mi	160,93	×2
✓ 6	19/2/2005	7th Susitna 100 Mile	160,93	×2
✓ 7	2/10/2004	14th Arkansas Traveller 100	160,93	×2
✓ 8	8/11/2003	1st Javelina Jundred 100 Mile	160,93	×2
✓ 9	20/7/2002	14th Vermont 100 Mile Endurance Race	160,93	×2
✓ 10	1/6/2002	7th Kettle Moraine 100 Mile Endurance Run	160,93	×2
✓ 11	21/7/2001	13th Vermont 100 Mile Endurance Race	160,93	×2
✓ 12	9/9/2000	10th Superior Fall Trail Races 100 Mile	160,93	×2
✓ 13	8/4/2000	6th Umstead Endurance Run 100 Miles	160,93	×2
✓ 14	19/2/2000	3rd Susitna 100 Mile	160,93	×2
✓ 15	11/9/1999	9th Superior Fall Trail Races 100 Mile	160,93	×2
✓ 16	4/6/1999	4th Kettle Moraine 100 Mile Endurance Run	160,93	×2
✓ 17	6/2/1999	7th Rocky Raccoon 100 Mile Trail Run	160,93	×2
✓ 18	5/6/1998	3rd Kettle Moraine 100 Mile Endurance Run	160,93	×2
✓ 19	4/4/1998	4th Umstead Endurance Run 100 Miles	160,93	×2
✓ 20	20/9/1997	7th Superior Fall Trail Races 100 Mile	160,93	×2
✓ 21	3/6/2006	17th FANS 24 Hour Runs	127,38	×1
✓ 22	7/6/2003	14th FANS 24 Hour Runs	127,38	×1
✓ 23	29/6/1996	7th FANS 24 Hour Runs	122,79	×1
✓ 24	23/6/2001	12th FANS 24 Hour Runs	105,48	×1
✓ 25	19/10/2002	16th Edmund Fitzgerald 100K Road Race	100,00	×1
✓ 26	20/10/2001	15th Edmund Fitzgerald 100K Road Race	100,00	×1
✓ 27	19/10/1996	12th Edmund Fitzgerald 100K Road Race	100,00	×1
✓ 28	16/6/1997	72nd Comrades Marathon - Down Run	89,00	×1
✓ 29	7/6/2008	19th FANS 24 Hour Runs	80,61	×1
✓ 30	26/8/2006	2nd Lean Horse Ultra-Marathon 50 Mile	80,47	×1
✓ 31	16/4/2005	5th McNaughton 50 Mile Ultra Race	80,47	×1
✓ 32	24/7/2004	23rd Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 33	11/10/2003	4th Tussey Mountainback 50 Miler	80,47	×1
✓ 34	11/5/2002	21th Ice Age Trail 50 Mile Run	80,47	×1
✓ 35	4/11/2000	8th OPSF Ultra 50 Mile Race	80,47	×1
✓ 36	14/10/2000	19th Le Grizz 50 Mile Ultramarathon	80,47	×1
✓ 37	29/7/2000	19th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 38	4/12/1999	7th Kentucky Arches 50 Mile	80,47	×1
✓ 39	2/8/1998	3rd Resurrection Pass 50 Mile Ultra Trail Race	80,47	×1
✓ 40	25/7/1998	17th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 41	16/5/1998	17th Ice Age Trail 50 Mile Run	80,47	×1
✓ 42	13/12/1997	8th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 43	26/7/1997	16th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 44	17/5/1997	16th Ice Age Trail 50 Mile Run	80,47	×1
✓ 45	23/11/1996	34th JFK 50 Mile	80,47	×1
✓ 46	2/11/1996	4th OPSF Ultra 50 Mile Race	80,47	×1
✓ 47	27/7/1996	15th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 48	13/4/1996	4th Bull Run Run 50 Miler	80,47	×1
✓ 49	2/3/1996	16th Carl Touchstone Memorial Mississippi Trail 50 Mile	80,47	×1
✓ 50	13/5/1995	14th Ice Age Trail 50 Mile Run	80,47	×1
✓ 51	4/11/1995	13th Pine Mountain Trail Run	74,03	×1
✓ 52	14/3/2009	6th Land Between The Lakes 60 km Trail Run	60,00	—
53	17/10/2009	1st Wild Duluth 50 km Races	50,00	—
54	18/7/2009	8th Tahoe Rim Trail 50km Endurance Runs	50,00	—
55	12/10/2008	22nd Glacial Trail 50 km Race	50,00	—
56	5/7/2008	15th Afton Trail Run 50K	50,00	—
57	29/12/2007	11th Huff 50K Trail Run	50,00	—
58	14/10/2007	21st Glacial Trail 50 km Race	50,00	—
59	9/12/2006	17th Sunmart Texas Trails 50 km	50,00	—
60	8/10/2006	20th Glacial Trail 50 km Race	50,00	—
61	18/12/2004	8th Huff 50K Trail Run	50,00	—
62	7/8/2004	3rd Big Basin Redwoods Trail Run	50,00	—
63	20/9/2003	1st Great Eastern Endurance Run 50 km	50,00	—
64	5/7/2003	10th Afton Trail Run 50K	50,00	—
65	6/7/2002	9th Afton Trail Run 50K	50,00	—
66	7/7/2001	8th Afton Trail Run 50K	50,00	—
67	21/4/2001	12th Trail Mix Race	50,00	—
68	7/4/2001	3rd Double Chubb 50k	50,00	—
69	8/7/2000	7th Afton Trail Run 50K	50,00	—
70	22/4/2000	11th Trail Mix Race	50,00	—
71	18/12/1999	3rd Huff 50K Trail Run	50,00	—
72	17/4/1999	10th Trail Mix Race	50,00	—
73	10/4/1999	1st Double Chubb 50k	50,00	—
74	4/7/1998	5th Afton Trail Run 50K	50,00	—
75	18/4/1998	9th Trail Mix Race	50,00	—
76	5/7/1997	4th Afton Trail Run 50K	50,00	—
77	6/7/1996	3rd Afton Trail Run 50K	50,00	—
78	30/9/1995	1st Flatrock 50K	50,00	—
79	1/7/1995	2nd Afton Trail Run 50K	50,00	—
80	25/3/1995	9th Crown King Scramble 50K	50,00	—
81	2/7/1994	1st Afton Trail Run 50K	50,00	—