Texoma Challenge 5K, 10K, Half Marathon, Marathon, 50K, Relay & Ruck in Denison TX

denison TX / waterloo park

JUNE 6 / 2026

5k, 10k, half marathon, marathon, 50k, 50k relay
+10k ruck

SURFACE: Rooty & dirt single-track trails.
COURSE: Waterloo Trails
ELEVATION: Rolling hills 500 ft elevation gain per loop.
LOCATION: Waterlooo Park (1101 Waterloo Lake Dr, Denison, TX 75020)
WEATHER: Historic Average 68-80 degrees

registration is Open

SATURDAY

*Please arrive 60-45 min. before your start time*

6pm - packet pickup + texas outlaw pop-up store
8pm - 50K & Marathon STARTS
8:10pm - HALF MARATHON, 10k, & 10k RUCK STARTS
8:20PM - 5K STARTS
8:30PM - 5OK RELAY STARTS

SUNDAY

5:00AM - cutoff for all EVENTS (9 hours)

sunday anytime - TAKE DOWN/PICKUP COURSE MARKINGS VOLUNTEER HERE

ALL DISTANCES

TEXOMA CHALLENGE TEE
1st, 2nd, 3rd place OVERAL male AWARDS FOR EACH DISTANCE
1st, 2nd, 3rd place OVERAL FEmale AWARDS FOR EACH DISTANCE

RUNNING EVENTS

EACH RUNNING EVENT WILL GET A TEXOMA CHALLENGE FINISHER MEDAL WITH THEIR DISTANCE ON IT
THERE WILL BE A last place - dfl "dead freakin" last AWARD for 50k RUNNING EVENT & RELAY
RELAY TEAMS WILL GET A 1ST PLACE CHAMPIONSHIP TEAM AWARD AND 2ND PLACE RUNNER-UP AWARD

ruck EVENT

ALL RUCK FINISHERS WILL RECEIVE A TEXOMA CHALLENGE RUCK PATCH

This race is a part of the Texas Summer Night Series. The 2026 "Texas Summer Night Series" spans all across Texas. Complete 3 out of the 8 races in the series to complete it.

Anyone who completes 3/8 runs in this series receives all 3 collectible medals and a TSNS Duffle Bag

June 8 | Texoma Challenge (Denison TX)

June 13 | Fire Trail Running Festival (near San Antonio TX)

July 18 | Eastern Legend (Grapeland TX)

August 1 | Fiesta Night Run (San Antonio TX)

August 15 | Night Claw (Glen Rose TX)

September 5 | Bear Country Night Trek (Waco TX)

September 12 | Lone Star Night Run (near Ft Worth TX)

September 19 | Noche Trail Run (near Kerrville TX)

WHAT PEOPLE SAY

KENNY NUNEZ

⭐️⭐️⭐️⭐️⭐️

Loved the course. I was disappointed with the rainout, but had a lot of fun. I only was able to finish 2 loops out of the 5. I hope we can do this again next year.

BRENT TRAMMELL