Tim Cronk
ID 640743
Born : 1962 Cat. M60 Ultrarunner since 2015 USA
39
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
54
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
23,9%
Rank quotient ?This runner's calculation uses 39 eligible race(s): Σ(rank − 1) = 1 500; Σ finishers = 6 273. 1 500 / 6 273 × 100 = 23.91%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed39
Km — ultra races4 359 km
> 100 km11
> 160 km10
> 200 km3
> 24h1
> 48h1
Longest race496,6 km
1st Arizona Monster 300 — 4/4/2025

Km per year (ultra races)

901
6 races
2022
430
5 races
2023
550
6 races
2024
658
3 races
2025
558
4 races
2026

Race types (share of distance)

Road5,0%
Trail93,5%
Elim.1,5%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km4h10'54100 km13h03'3250 mi8h45'06100 mi21h42'15Backyard10 loops

HISTORY

39 race(s)
DateRacePerf.Rk
2026
27.07 135mi USA40th Badwater Ultramarathon 40:44:56 h78
06.05 100mi USA6th Cocodona Bradshaw Brute 31:30:43 h10
18.04 130km USA14th Badwater Salton Sea 19:27:29 h7
24.01 50km USA28th Pemberton Trail 50 km 4:39:56 h5
2025
04.04 308.6mi USA1st Arizona Monster 300 4d 13:08:57 h19
01.03 50mi USA35th Old Pueblo 50 Mile Endurance Run 11:56:56 h31
25.01 50mi USA9th AZT Oracle Rumble 50 Mile 10:08:14 h7
2024
07.12 50mi USA11th Colossal Vail 50 Mile 9:21:03 h11
17.08 100mi USA42nd Leadville Trail 100 Mile 28:20:34 h196
02.03 50mi USA34th Old Pueblo 50 Mile Endurance Run 10:59:45 h13
27.01 50mi USA8th AZT Oracle Rumble 50 Mile 10:27:42 h11
20.01 Backyard Ultra USA1st Saguaro Showdown Backyard Ultra 67.060 km (10h)17
06.01 50mi USA44th Avalon Benefit 50 Mile Run 8:54:59 h38
2023
02.12 50mi USA10th Colossal Vail 50 Mile 9:37:35 h9
21.07 102mi USA10th Ouray 100 Mile Endurance Run 45:57:36 h21
26.03 50km USA2nd Red Rocks of Sedona East Side 5:34:21 h1 🏆
25.03 55km USA2nd Red Rocks of Sedona East Side 6:52:59 h3 🥉
28.01 50mi USA7th AZT Oracle Rumble 50 Mile 10:48:45 h7
2022
20.08 100mi USA40th Leadville Trail 100 Mile 27:09:47 h123
09.07 77km USA15th Leadville Silver Rush 50 Mile Run 9:46:57 h92
02.05 250mi USA2nd Cocodona 250 Mile Race 4d 04:00:59 h41
12.02 99.9km USA9th Black Canyon Trail 100 km Run 13:03:32 h143
29.01 50mi USA6th AZT Oracle Rumble 50 Mile 10:37:11 h5
15.01 50mi USA10th San Diego 50 Mile Trail 8:45:06 h14
2021
11.04 50km USA10th The Zion 50 km Run 6:16:16 h28
14.02 100km USA8th Black Canyon Trail 100 km Run 13:24:28 h143
2019
17.08 100mi USA37th Leadville Trail 100 Mile 24:41:09 h75
13.04 88km USA4th Whiskey Basin 88 km Trail Run 10:36:02 h15
23.03 50km USA6th Behind the Rocks 50km Race 5:29:41 h35
26.01 50km USA2nd Arches Ultra 50 km Race 5:02:12 h18
2018
20.10 100mi USA10th Ghost Train Rail Trail Races 100 Mile 21:42:15 h15
21.07 100mi USA30th Vermont 100 Mile Endurance Race 23:37:05 h128
23.06 50km USA5th Catamount Ultra Marathon 5:06:53 h40
09.06 50mi USA2nd Endurance Challenge - Massachusetts Trail 50 Miles 12:08:16 h55
27.05 50km USA13th Trail Festival at Pineland Farms 5:03:50 h43
24.02 50mi USA5th Antelope Canyon 50 Mile Race 9:44:32 h15
27.01 50km USA2nd AZT Oracle Rumble 50 km 5:38:02 h7
2015
07.03 50mi USA25th Old Pueblo 50 Mile Endurance Run 9:30:40 h14
14.02 50km USA17th Pemberton Trail 50 km 4:10:54 h6