The Mammoth Trail Run

High Hope Ranch covers roughly 1,000 acres of rugged terrain southwest of Fort Worth, and The Mammoth turns it into a full trail race day, from a 1K kids dash up to a 100K ultra. Primitive camping on the ranch keeps race morning simple, and the whole event stays contained on private land rather than spread across public roads.

The ranch trails are steeper than most runners expect from this part of Texas, with sharp punchy climbs and descents on loose, rocky footing. Organizers push trail shoes with real traction for a reason. The 100K starts at 7:00 AM and carries a 26 hour cutoff, so most of that field runs through the night, and the race is cupless, so carried bottles or flasks are required.

Early October in North Texas often starts in the 60s and can push into the 80s by afternoon, with humidity that makes the exposed sections feel hotter. The 100K field gets relief overnight, then faces a second warm stretch the next morning.