Amy Clark
ID 245291
Born : 1976 Cat. W50 Ultrarunner since 2011 USA
50
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
45,2%
Rank quotient ?This runner's calculation uses 58 eligible race(s): Σ(rank − 1) = 4 458; Σ finishers = 9 858. 4 458 / 9 858 × 100 = 45.22%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed58
Km — ultra races4 593 km
> 100 km8
> 160 km8
> 24h1
> 48h1
Longest race160,9 km
52nd Western States 100 Mile Endurance Run — 28/6/2025

Km per year (ultra races)

441
5 races
2022
200
3 races
2023
210
3 races
2024
345
3 races
2025
2026

Race types (share of distance)

Road6,8%
Trail93,2%

Wins & podiums (ultra)

🏆 Win1
🏆 Win F9
🏅 Top 35
🏅 Top 3 F17
Longest winning streak1
Current streak0

Records

50 km4h30'24100 km12h40'2450 mi7h14'38100 mi19h24'28

HISTORY

58 race(s)
DateRacePerf.Rk
2025
28.06 100mi USA52nd Western States 100 Mile Endurance Run 26:40:12 h140
17.05 52mi USA7th Possums Revenge 52 Mile Race 11:33:48 h3 🥉
08.02 100km USA12th Black Canyon Trail 100 km Run 15:10:14 h405
2024
13.07 100km USA11th Beaverhead 100K Endurance Run 17:20:09 h48
22.06 60km USA18th Capt'n Karl's Trail Series - Pedernales Falls 7:54:25 h9
08.06 50km USA7th Coyote 50 km Trail Run 6:04:14 h3 🥉
2023
11.11 50km USA26th Rockledge Rumble Trail Run 5:52:19 h10
07.10 50km USA3rd Dana Peak Trail Run 6:29:07 h23
18.02 99.9km USA10th Black Canyon Trail 100 km Run 13:20:11 h231
2022
29.10 100km USA20th Javelina Jundred 100 km Endurance Run 15:24:08 h74
24.09 50km USA4th Three Sisters Skyline 50km Race 7:52:56 h151
20.08 100mi USA40th Leadville Trail 100 Mile 29:10:20 h257
26.03 50mi USA9th Behind the Rocks 50 Mile Race 12:44:13 h57
19.02 50km USA21th Hagg Lake Trail Runs 50K 6:34:44 h84
2021
03.10 50km USA3rd Three Sisters Skyline 50km Race 7:14:06 h106
2020
01.03 50km USA13th The Cowtown Marathon 5:36:22 h92
15.02 50km USA20th Hagg Lake Trail Runs 50K 6:42:40 h60
2019
26.10 100km USA1st Lake Murray 100 km Endurance Run 13:54:20 h1 🏆
06.09 100mi USA40th Wasatch Front 100 Mile 32:37:37 h108
29.06 100mi USA46th Western States 100 Mile Endurance Run 29:25:19 h284
18.05 50km USA6th Smith Rock Ascent 50K 6:37:32 h176
27.04 100km USA6th The Canyons Endurance 100 km Run 17:12:07 h218
14.04 40mi USA17th Peterson Ridge Rumble 40 Mile Trail Run 7:09:25 h56
24.02 50km USA12th The Cowtown Marathon 5:07:42 h64
16.02 50km USA19th Hagg Lake Trail Runs 50K 6:48:16 h60
2018
06.10 100km USA7th Cuyamaca 100 km Endurance Run 15:43:56 h125
15.09 50km USA2nd Mountain Running Series - Mount Bachelor 6:43:45 h57
27.07 9h USA1st La Nuit 9 Hour Trail Run 56.648 km5
19.05 52mi USA1st Possums Revenge 52 Mile Race 10:14:08 h4
05.05 51.4mi USA19th Collegiate Peaks 50 Miles 11:18:53 h21
08.04 35mi USA16th Peterson Ridge Rumble 35 Mile Trail Run 6:56:53 h83
17.02 50km USA18th Hagg Lake Trail Runs 50K 6:48:03 h73
07.01 100km USA18th Bandera 100 km Endurance Run 13:26:45 h63
2017
30.12 55h USA5th Snowdrop Ultra 55 Hour Race 64.373 km145
07.10 50km USA4th Oregon Coast 50k 6:40:48 h170
16.06 100mi USA5th Bryce 100 Mile Trail Run 28:51:42 h37
06.05 50mi USA2nd WRC Hachie 50 Mile Ultra 7:14:38 h2 🥈
22.04 50km USA1st The Wild Canyon Ultra 50 km Race 5:24:31 h4
2016
05.11 100mi USA9th Pinhoti 100 Mile 26:03:19 h62
15.10 50mi USA32nd Palo Duro 50 Mile Trail Run 11:08:10 h9
23.07 9h USA2nd Fossil Valley 9 Hour Trail Extravaganza 73.595 km4
16.07 50km USA10th El Scorcho 50k 5:13:59 h12
25.06 60km USA10th Capt'n Karl's Trail Series - Pedernales Falls 8:03:38 h32
21.05 50km USA11th Jemez Mountain 50km Trail Run 8:00:06 h67
28.02 50km USA9th The Cowtown Marathon 4:49:53 h51
06.02 100mi USA24th Rocky Raccoon 100 Mile Trail Run 19:24:28 h17
09.01 100km USA16th Bandera 100 km Ultratrail 12:40:24 h53
2015
12.09 50km USA28th McKenzie River 50 km Trail Run 6:17:11 h97
12.04 40mi USA13th Peterson Ridge Rumble 40 Mile Trail Run 6:57:55 h64
29.03 50km USA5th Gorge Waterfalls 50k 6:58:20 h166
2014
18.10 100mi USA4th Taturs Pumpkin Holler 100 Mile Race 23:45:31 h2 🥈
10.05 50km USA19th McDonald Forest 50K Trail Run 6:55:23 h175
22.03 50mi USA15th Grasslands 50 Mile Trail Run 8:50:12 h6
23.02 50km USA7th The Cowtown Marathon 4:57:39 h72
2013
23.03 33.2mi USA7th Kal-Haven Trail Run 6:07:22 h36
23.03 50mi USA14th Grasslands 50 Mile Trail Run 8:56:41 h5
24.02 50km USA6th The Cowtown Marathon 4:30:24 h35
2011
15.10 50km USA27th Palo Duro 50 km Trail Run 6:27:15 h42