Grasslands Trail Run

MAR
20-21
2027
Trail races at the Lyndon B Johnson National Grasslands near Decatur Texas each March, from 15K up to 100 Mile. Courses loop through rolling hills, pine and oak groves, open fields, and livestock areas.
20-21 Mar 2027
100 miles 50 miles 26 miles 13 miles 15 kilometers

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Grasslands Trail Run

The Grasslands Trail Run is a North Texas trail running event held annually since 1999 on the third weekend of March at the Lyndon B. Johnson National Grasslands near Decatur, Texas. The Grasslands area covers more than 20,000 acres managed by the U.S. Forest Service and lies north of Fort Worth.

Courses loop among rolling hills and pass through a mix of pine and oak grove forests, open fields, and areas used for livestock. Runners share the trails with horses and pass grazing cattle. Multiple race distances are offered over the event weekend.

  • 100 Mile
  • 50 Mile
  • Marathon
  • Half Marathon (Saturday start)
  • 15K (Sunday start)

The event provides marked trail routes and aid stations as described in its race details. Results and historical finishing lists are maintained for past editions. The format separates some distances by day, with the half marathon on Saturday and the 15K on Sunday. Visit the organization's website for the most recent information.

100 mi
100 Mile
50 mi
50 Mile
26 mi
Marathon
13 mi
Half Marathon
15 km
Sunday 15k
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