Colorado River Run: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K and 5K

COLORADO RIVER RUN

Run to the River

"Out here on these trails, not all who wander are lost, some are simply finding their strength."

Race Details

• Date: November 27, 2026
• Location: 4000 Shaw Dr., Marble Falls, TX
• Race Link: Colorado River Run Registration
• Events: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K, and 5K

Connect with Nature, Challenge Your Endurance

Set along the scenic banks and trails surrounding the majestic Colorado River at Turkey Bend Park, this event offers a unique opportunity to connect with nature while testing your limits. Run through diverse landscapes, including riverbanks, rugged trails, and serene natural habitats as you embrace the spirit of outdoor adventure.

About the Race

• Experience: The Colorado River Run promises to be a memorable experience for runners and nature enthusiasts alike.
• Course Design: The course layout is designed to highlight the river's most picturesque spots while providing a challenging terrain.
• Runner Types: Suitable for competitive athletes seeking to set personal records and recreational runners looking for a unique trail experience.
• Registration: Register by November 7, 2026 to guarantee your race shirt!

Race Distances

100 Mile Ultramarathon

• Start Time: 8:00 AM
• Cut-off: 39 hours
• Description: The ultimate river trail adventure for endurance athletes.

50 Mile Ultramarathon, 10 Miler, 5 Miler

• Start Time: 8:00 AM
• Cut-off: 36 hours
• Description: Challenge yourself with breathtaking river views.

50K & Marathon (26.2 miles)

• Start Time: 8:30 AM
• Cut-off: 12 hours
• Description: Classic distance with unforgettable scenery.

Half Marathon (13.1 miles)

• Start Time: 8:30 AM
• Cut-off: 9 hours
• Description: Perfect distance to enjoy the river trails.

10K (6.2 miles) | 5K Run/Walk (3.1 miles)

• Start Time: 8:30 AM
• Cut-off: 9 hours
• Description: Family-friendly option - children can accompany registered parents for free!

Course Description

Scenic River Trails

The course is designed to highlight the Colorado River's most picturesque spots while providing a challenging terrain for runners. You'll experience diverse landscapes, including riverbanks, rugged trails, and serene natural habitats.

Fully Supported Adventure

Fully stocked aid stations along the course provide hydration, nutrition, and medical assistance. Our eco-friendly practices minimize the event's environmental footprint.

What You'll Experience

• Terrain: Mix of single-track trails, dirt paths, and occasional technical sections.
• Scenery: Stunning river views, natural habitats, and diverse ecosystems.
• Elevation: Moderate with some challenging climbs and descents.
• Community: Welcoming atmosphere for runners of all abilities.

What's Included

• Custom Finisher Medal: Unique medal for all finishers.
• Aid Stations: Fully stocked with nutrition and hydration.
• Support: On-course and at finish line assistance.
• Pacing Allowed: Pacers are allowed for the 100 Mile Run (after mile 50) and 50 Mile Run (after mile 30).

Volunteer Opportunities

• We Need Help With: Course Marshals, Aid Station Support, Registration/Packet Pickup Assistants.
• All Volunteers Receive: Race shirt, meal and snacks, community service hours, future race credit.
• Shifts Available: Morning: 7:00 AM - 1:00 PM: Afternoon: 1:00 PM - 6:00 PM.

If you're interested in volunteering, please contact info@atxactive.com.

Ready for Your Colorado River Adventure?

Join us for this unique trail experience along the scenic banks of the Colorado River. Challenge your endurance and connect with nature! REGISTER NOW!