The Guana River Trail Run

The Guana River Trail Run is held on December 6, 2026 in Ponte Vedra Beach, Florida. Three trail events are spread through the day: the long race, listed at 50 miles (80.5 km), starts at 8:00 a.m., the 50K relay goes off at 10:00 a.m., and the 12K at 1:00 p.m. Everything is built on a loop of roughly 7.8 miles (12.5 km) run clockwise, starting and finishing at the trail access point, with 12K runners set off a little further along the loop so their distance comes out right.

Underfoot it is mostly packed trail, with technical stretches where you pick your way through oak roots, and close to 90% of the route sits in shade. A repeated-loop format is a friendly way to attempt your first ultra: aid is easy to reach, you learn the terrain after one lap, and you can stop knowing exactly what you are giving up.