Grasslands Trail Run
Alvord, United States • 21 Mar 2026
Grasslands Trail Run
Established in 1999, the Grasslands Trail Run is an annual event held at the Lyndon B. Johnson National Grasslands near Decatur, Texas. The venue consists of over 20,000 acres of land managed by the U.S. Forest Service, located north of Fort Worth. The event takes place during the third weekend of March.
The course features trails that loop through rolling hills and a varied landscape including pine and oak grove forests, open fields, and livestock areas. Participants share the trails with horses and may pass cattle along the route.
The event offers several race distances on Saturday and Sunday:
- 100 Mile
- 50 Mile
- Marathon
- Half Marathon
- 15K (Sunday)
The routes are primarily trail-based, and the event is managed by Southwest Endurance Running LLC. Several distances including the 50 Miler, Marathon, and Half Marathon have long been part of this North Texas trail running tradition. Visit the organization's website for the most recent information.