Crystal Clark
ID 27468
Born : 1974 Cat. W50 Ultrarunner since 2005 USA
29
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
48
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
2
Countries visited ?MARMoroccoUSAUnited States
38,1%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 967; Σ finishers = 2 535. 967 / 2 535 × 100 = 38.15%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed34
Km — ultra races2 787 km
> 100 km8
> 160 km6
> 200 km2
> 24h4
> 48h1
Longest race250,0 km
38. Marathon des Sables — 4/4/2024

Km per year (ultra races)

445
5 races
2022
498
6 races
2023
625
5 races
2024
282
2 races
2025
211
2 races
2026

Race types (share of distance)

Road28,1%
Trail62,9%
Stage9,0%

Wins & podiums (ultra)

🏆 Win1
🏆 Win F6
🏅 Top 33
🏅 Top 3 F10
Longest winning streak1
Current streak0

Records

50 km5h52'12100 km13h09'5950 mi9h19'57100 mi25h03'006 h51,82 km12 h82,08 km24 h164,15 km48 h83,69 km

HISTORY

29 race(s)
DateRacePerf.Rk
2026
16.05 31mi USA20th Tie Dye 50k 6:49:13 h37
27.02 100mi USA8th Grandmaster Ultras 100 Mile Run 29:29:00 h10
2025
21.12 50mi USA4th Charleston Itty Bitty 50 9:55:59 h21
10.10 125mi USA26th Heartland 125 Mile Race 34:55:11 h4
2024
21.09 24h USA1st A Day in the Park 24h 164.153 km3 🥉
17.08 50mi USA19th Lean Horse Ultra-Marathon 50 Mile 9:19:57 h6
29.06 50mi USA16h Dawg Gone Long Run 50 Miler 12:00:50 h11
04.04 250km/6stages MAR38. Marathon des Sables 41:02:46 h215
20.01 50km USA3rd Lake of the Woods 50 km Race 5:52:12 h5
2023
02.09 100km USA2nd Blue Heron Hundreds 100 km 13:09:59 h8
01.07 12h USA17th Run Under The Stars 12 Hour Endurance Run 56.327 km27
20.05 31mi USA17th Tie Dye 50k 7:10:29 h41
01.04 100mi USA28th Umstead Endurance Run 100 Miles 25:03:00 h61
04.03 50mi USA17th Delano Park 50 Mile Run 9:31:36 h2 🥈
18.02 50km USA2nd Lake of the Woods 50 km Race 6:14:56 h11
2022
03.12 100mi USA9th Brazos Bend 100 26:51:05 h65
05.11 100km USA2nd Whispering Grace 50 Mile Race 14:48:42 h1 🏆
21.05 31mi USA16th Tie Dye 50k 8:53:23 h71
01.04 48h USA3rd Vernal Equinox 48 Hour Race 83.685 km30
19.02 50km USA1st Lake of the Woods 50 km Race 7:31:31 h22
2021
09.10 24h USA4th Bear Lake Ultra Race 114.746 km12
04.09 50mi USA3rd Tuscazoar 50 Mile Night Trail Race 14:03:00 h6
03.07 12h USA15th Run Under The Stars 12 Hour Endurance Run 82.076 km15
2018
10.03 60km USA15th Land Between The Lakes 60 km Trail Run 8:06:58 h46
2017
11.11 50mi USA4th Tunnel Hill 50 Mile Race 10:42:40 h125
09.09 50mi USA8th Hawk Hundred - 50 Mile Trail Run 17:02:45 h67
10.06 10h USA11th Run Under The Stars - Paducah 75.639 km21
2013
15.09 6h USA1st Hearts and Health Run 51.820 km7
2005
10.09 24h USA15th Olander Park 24 Hour Run 101.237 km46