Embark on a true North Texas trail running tradition at the Grasslands Trail Run, set for March 21, 2026, in the scenic LBJ National Grasslands near Decatur, TX. This beloved event offers a diverse range of distances, including a challenging 100-mile, a formidable 50-mile, a full 26.2-mile marathon, a picturesque 13.1-mile half marathon, and a spirited 15K. Known for its welcoming atmosphere and runnable course, the Grasslands Trail Run has been a staple since 1999, inviting both seasoned ultrarunners and those new to the trails to experience the beauty of the Texas backcountry.

The course winds through more than 20,000 acres of US Forest Service land, featuring rolling hills, open grassland fields, and charming stretches of pine and oak grove forests. Runners will navigate mostly single-track, multi-use equestrian trails, with approximately 45 miles of non-overlapping trail ensuring a unique experience for marathon, half marathon, and 15K participants. While the elevation profile is gentle, with around 4,000 feet of gain for the 100-miler, runners should be prepared for varied terrain that can include sandy paths, muddy bogs, and stream crossings, especially if recent weather has been wet. Expect to share the trails with local wildlife, including horses and cows—just remember to close those cattle gates behind you! Typical race day conditions often bring pleasant temperatures, with highs around 72°F and lows around 48°F, and only a 10% chance of precipitation, offering ideal running weather.

All races commence from the central TADRA Point Trailhead, which also serves as a vibrant start/finish area and a crucial aid station hub. As a cupless event, runners are required to carry their own hydration systems, which can be refilled at well-stocked aid stations located every 3 to 6 miles. These stations provide water, electrolyte drinks like Gatorade or Tailwind, soda, pickle juice, and a variety of fuel options ranging from fresh fruit and potato chips to PB&J sandwiches and M&Ms. For the longer distances, hot food options such as ramen and quesadillas will be available at night. The Grasslands Trail Run promises not just a race, but an authentic adventure through a distinct Texas landscape, fostering a supportive community spirit that transforms tired legs into full hearts at the finish line.