The Grasslands Trail Runs

The Grasslands Trail Runs takes place in Alvord, Texas, on March 20–21, 2027. Saturday, March 20, hosts the 100-mile, the 50-mile, the marathon (26.2 miles) and the half marathon (13.1 miles), while a 15K (9.3 miles) closes the weekend on Sunday, March 21. Start times were not published at the time of listing.

Five distances across two days make this a useful weekend for a mixed group of runners. The 15K and half marathon are good introductions to trail racing, the marathon is a natural crossover for road runners, and the 50-mile and 100-mile serve as early-season goals for ultrarunners. If you are targeting the 100-mile, a 20- to 24-week build with back-to-back long runs and a night run is a sensible plan; for the 50-mile, 16 to 20 weeks with long runs peaking near 30 miles. Grassland terrain tends to be rolling rather than mountainous, but it can be exposed, so plan for wind and sun. Keep your shorter-distance pacing honest, since trail miles run slower than road miles.