Caveman Challenge at Waterloo Lake

October 10th 2026
Denison, TX
50 KM

Come find your inner caveman endurance and run the inaugural Caveman Challenge at Waterloo Lake trail in Denison, TX. There is a little bit of everything for you on this trail with plenty of dirt, rocks, roots and all the fun in between! You will find beautiful views overlooking the lake and the trail features a CAVE in the middle of the course. Maybe you’ll spot a prehistoric ancestor you have to out run.

Upcoming Races

Oct 10 2026
50 KM
Multiple Loop
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Additional Distances

This event also has the following sub ultra distances

26.2 Miles 10 KM 13.1 Miles 5 KM

Results

Date Finishers Top Result (F) Top Result (M)
10/11/25 7 5:36:10 5:44:19
10/12/24 11 6:08:58

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

MCW The Tatum Classic
Middletown Township, NJ - 16 finishers
50 KM
Connor's Claims Ultra
Stockton, UT - 24 finishers
50 Miles | 50 KM
Momentus Backyard Ultra
Monroe, NC - 74 finishers
Backyard
Echo Valley Runs
Chelan, WA - 80 finishers
50 KM
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
Blackfoot Ultra
Edmonton, AB - 124 finishers
100 KM | 50 Miles | 50 KM
Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
Yankee Springs Trail Run
Middleville, MI - 60 finishers
100 KM | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
View All Results