Grasslands Trail Run

Grasslands Trail Run : March 21-22, 2026

The Grasslands Trail Run takes place in the Lyndon B. Johnson National Grasslands near Alvord, TX. The trails loop through rolling hills, pine and oak grove forests, open fields, and livestock areas. All races start and finish at TADRA Point Trailhead. The event uses single- and multi-loop trail routes with aid stations marked on the course map.

Distances and course layout

• 100 Mile
• 50 Mile
• Marathon
• Half Marathon
• 15K (held Sunday)

The half marathon runs on the blue trail. The marathon uses the white and blue trails. The 50-mile and 100-mile courses use the blue, white, yellow, and red trails. The 15K uses the yellow trail.

Course features, cutoffs and awards

The event runs on equestrian trails. The 100-mile course is non-technical and has about 4,000 feet of elevation gain. The 100-mile field has a 30-hour cutoff. The 15K has a 3.5-hour cutoff, matching the Sunday finish time for the 100-mile race. The 50-mile, marathon and half marathon have cutoffs.

Runners receive a soft race shirt; 100-mile entrants may receive a long sleeve shirt if registered before the shirt order is placed about 2.5 weeks prior to the event. 100-mile finishers earn a sub-20, sub-24 or Finisher buckle. Finishers in the 50-mile, marathon, half marathon and 15K receive distance-specific medals.

Volunteers earn race credits that can transfer to runners. Cancellations more than 30 days before the race receive 100% race credit toward another Blaze Trails event; cancellations between 30 days and two weeks receive 50% race credit. No refunds or transfers are allowed less than two weeks before race day. Credits must be used within one year unless prior arrangements are made for medical or military reasons. Visit the organization's website for the most recent information.