Karen Clarke
ID 764731
Born : 1967 Cat. W55 Ultrarunner since 2010 USA
48
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
1
Countries visited ?USAUnited States
44,6%
Rank quotient ?This runner's calculation uses 48 eligible race(s): Σ(rank − 1) = 3 520; Σ finishers = 7 900. 3 520 / 7 900 × 100 = 44.56%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed48
Km — ultra races3 833 km
> 100 km8
> 160 km7
> 24h1
Longest race160,9 km
5th Rim to River 100 Mile Race — 26/10/2024

Km per year (ultra races)

396
5 races
2022
956
9 races
2023
596
7 races
2024
140
2 races
2025
60
1 race
2026

Race types (share of distance)

Road4,0%
Trail96,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F2
🏅 Top 30
🏅 Top 3 F8
Longest winning streak0
Current streak0

Records

50 km5h00'20100 km12h46'0750 mi10h15'00100 mi23h00'5112 h81,11 km24 h105,06 km

HISTORY

48 race(s)
DateRacePerf.Rk
2026
20.06 37mi USA29th Rachel Carson Trail Challenge 11:55:58 h195
2025
23.08 50mi USA21st Baker Trail 50 Mile UltraChallenge 13:00:39 h66
21.06 37mi USA28th Rachel Carson Trail Challenge 13:30:42 h258
2024
26.10 100mi USA5th Rim to River 100 Mile Race 31:03:34 h156
24.08 50mi USA20th Baker Trail 50 Mile UltraChallenge 11:59:33 h49
22.06 34mi USA27th Rachel Carson Trail Challenge 11:53:22 h69
27.04 100km USA2nd Falling Water Ultras 100 km 18:54:20 h43
20.04 50km USA12th Hyner View Trail Challenge 50 km 8:47:44 h347
16.03 100km USA3rd Rabid Raccoon 100 km 16:53:08 h27
17.02 50km USA3rd Cabin Fever 50 km Race 7:20:33 h166
2023
17.12 50km USA6th Naked Nick 50 km Race 6:41:24 h102
14.10 100mi USA11th Indiana Trail 100 Mile 27:41:20 h83
08.09 100mi USA15th Run Woodstock - 100 Mile Hallucination Run 27:58:04 h65
26.08 50mi USA19th Baker Trail 50 Mile UltraChallenge 12:38:28 h50
29.07 100mi USA17th Burning River 100 Mile Endurance Run 28:25:44 h77
03.06 100mi USA34th Mohican Trail 100 Mile 28:34:13 h75
13.05 50mi USA13th Glacier Ridge Trail 50 Mile Ultramarathon 12:16:14 h16
22.04 50km USA11th Hyner View Trail Challenge 50 km 8:06:38 h265
15.04 10h USA3rd April Foolish 10 Hour Endurance Trail Race 51.499 km58
2022
08.10 100mi USA6th Canal Corridor 100 Mile Endurance Run 23:00:51 h44
10.09 50km USA18th Youngstown Ultra Trail Classic 50K 7:30:44 h23
27.08 50mi USA18th Baker Trail 50 Mile UltraChallenge 12:29:59 h40
18.06 34mi USA25th Rachel Carson Trail Challenge 9:41:33 h69
11.06 50km USA43rd Laurel Highlands 50 km Ultra 8:01:40 h50
2021
24.07 50mi USA15th Burning River 50 Mile Endurance Run 12:25:56 h142
03.07 50km USA11th Hell Hath No Hurry 50 km 7:33:38 h18
24.06 34mi USA24th Rachel Carson Trail Challenge 9:36:40 h45
22.05 12h USA1st High Lea 12 Hour Race 81.110 km14
2019
20.04 50km USA8th Hyner View Trail Challenge 50 km 8:24:11 h216
2018
04.11 32.8mi USA8th Fire on the Mountain 50k Ultra Marathon 8:32:09 h45
22.09 24h USA12th North Coast 24 Hour Endurance Run 105.062 km71
11.08 50mi USA7th Wildcat Ridge Romp 50 Mile 12:46:36 h6
28.07 52mi USA12th Burning River 50 Mile Back Endurance Run 12:56:52 h34
30.06 50km USA8th Hell Hath No Hurry 50 km 7:38:35 h12
2017
26.08 50mi USA13th Baker Trail 50 Mile UltraChallenge 10:27:13 h7
29.07 50mi USA11th Burning River 50 Mile Endurance Run 10:15:00 h29
24.06 34mi USA21th Rachel Carson Trail Challenge 8:29:45 h21
2016
09.09 100mi USA8th Run Woodstock - 100 Mile Hallucination Run 29:00:55 h58
16.07 100km USA9th Vermont 100 km Endurance Race 12:46:07 h18
25.06 50km USA6th Hell Hath No Hurry 50 km 7:19:53 h6
04.06 50mi USA4th Cayuga Trails 50 Mile Race 12:43:36 h126
19.03 50km USA9th Lt. JC Stone 50K UltraMarathon 5:00:20 h19
20.02 50km USA1st Olde Girdled Grit 50K 5:56:25 h21
2015
05.12 50km USA6th Bigfoot 50K Trail Race 6:39:23 h47
12.09 50km USA6th KTA Trail Challenge 9:30:29 h109
29.08 50mi USA11th Baker Trail 50 Mile UltraChallenge 11:29:01 h16
20.06 34mi USA19th Rachel Carson Trail Challenge 9:09:00 h26
2010
19.06 34mi USA14th Rachel Carson Trail Challenge 10:24:35 h69