Tierra Redonda Mountain Trail Run

Tierra Redonda Mountain Trail Run takes place in Bradley, California, on November 16–17, 2026. The 48-hour timed event opens the weekend on the first day, and the 24-hour timed event, the 21K (13 miles) and the 10K (6.2 miles) all run on the second. Everything happens on the same mountain trails, so the short races and the multi-day formats share one course and one finish area.

Two very different crowds meet here. The 10K and 21K are ordinary trail races you can prepare for in eight to ten weeks of consistent hill work. The 24- and 48-hour events belong to runners willing to manage sleep, food and foot care over one or two nights of looping. If you are eyeing a long timed format for the first time, plan your drop bag, your rest stops and your night layers before race morning instead of improvising them at 3:00 AM.