Colorado River Trail Run

Lago Vista, United States • 28-29 Nov 2025

Colorado River Run : overview

The Colorado River Run is a multi-distance trail event held at Turkey Bend Park on the Colorado River near Marble Falls / Lago Vista, Texas. It takes place across two days in late November 2025 and offers a range of trail distances that follow riverbanks, single-track trails and dirt paths through natural habitats. Distances include:

  • 100 Mile
  • 50 Mile
  • 50K
  • Marathon (26.2 miles)
  • Half Marathon (13.1 miles)
  • 10K (6.2 miles)
  • 5K Run/Walk (3.1 miles)
  • 5K Kids
  • 5K Ruck
  • 10 Miler

Course, support and policies

The 100-mile race is laid out as ten laps of a 10-mile loop; the 50-mile distance uses five laps of the same loop. The course includes mixed terrain with occasional technical sections and moderate elevation changes. Fully stocked aid stations will provide hydration, nutrition and medical assistance. Pacers are allowed for the 100-mile (after mile 50) and 50-mile (after mile 30) events; pacers must register, sign a waiver, wear a pacer bib, meet age requirements and may only enter or exit at aid stations. Custom finisher medals are awarded to finishers.

Event policies note a strict no-animals rule, limited campsites at the park on a first-come basis, and a no-refund cancellation policy except if the race is canceled for severe weather or other uncontrollable circumstances. Registration includes the participant park entry; additional spectator fees apply. Participants receive a wristband at packet pickup as proof of park entry. Visit the organization's website for the most recent information.

Race information

100 mi
100 Mile Ultramarathon
50 mi
50 Mile Ultramarathon
50 km
50k
26 mi
Marathon
13 mi
Half Marathon
10 mi
10 Miler
6 mi
10k
5 mi
5 Miler
3 mi
5k Run/walk Taco Trot
Visit the organization's website for the most recent information.
Trail runs nearby

Take in Lake Travis views in Austin at the RRCA 5 Miler Championship Oasis Donut Dash on November 1. Multiple distances and ruck options offer racing for every level plus championship prizes and lakeside festival vibes.

Run the scenic Salmagundi Trail Race in the Texas Hill Country with distances from 5K to 50K along Pedernales River trails. Enjoy live music, local food trucks, and support Austin Sunshine Camps at this championship event.

The 2025 Big Texas Ultra takes runners through scenic, rugged trails at Flat Creek Crossing Ranch and Pedernales Falls State Park, offering 15K, 50K and 100K distances on rocky, dirt and grass singletrack. Expect big climbs and Texas views.

Test your mettle in a Last Person Standing trail race in Marble Falls on November 22, 2025, running a 4.17 mile loop each hour until one runner remains. Enjoy scenic singletrack, primitive camping, and a shot at a national team spot.

Join the Hutto Turkey Trail Trot and Pajama Drive on Thanksgiving morning for 1.1 and 3.1 mile trail runs on dirt paths. Bring new youth pajamas to support The Pajama Program and help maintain Hippo Trails.

Join the Dripping Springs Turkey Trail Trot in late November for scenic 1k kids, 5k and 10k trail runs with virtual options. Wear a turkey suit for prizes and raffle fun in this festive post Thanksgiving run.