24HR The Grind

24HR "The Grind"

24HR "The Grind" is a 24 hour trail running event on January 29, 2027, held at 17801 Lake Perris Dr, Perris, CA. The course uses the Molcajete 1.0 loop, a circuit described as just over 4 miles. Participants run the same loop repeatedly during the 24 hour period, completing laps that include the Molcajete 1.0 climb each time.

The event accepts individual entrants and teams. Team entries are four-person teams in any mix of genders. Each team member is assigned a position number from 1 to 4 and runners must cycle through those numbers in order for each lap; skipping or repeating positions is not permitted. Team registration is completed by the team captain in a single registration.

Awards are presented to the top three individual men and the top three individual women, and to the top three teams. The start line, transition area, and group campground are at Group Picnic C; attendees should enter via the Morene Valley entrance rather than Ramona Express Way.

Registration closes January 2, 2027 at 11:59 PM PT. To ensure receipt of a medal, buckle, and participant shirt, registrants must register by December 24, 2026. Visit the organization's website for the most recent information.