Monserate Endurance Test
Fallbrook, United States • 21 Mar 2026
Monserate Endurance Test : March 21, 2026
The Monserate Endurance Test in Fallbrook, CA offers loop-based trail formats on Monserate Mountain Preserve. The event includes three options: 12-Hour Solo, 12-Hour Team, and 6-Hour Solo. Each loop measures 4 miles and has about 1,300 feet of elevation gain.
Participants choose their own pace and strategy. Loops may be walked, hiked, run, or shuffled, and each completed loop is counted. There is one fully stocked aid station at the bottom of every loop that provides water and fuel.
In the 12-Hour Team format teammates may run together or separately and combine their loop totals over the 12-hour period. There are no per-loop cutoffs. The event is presented as supportive and community oriented, with opportunities to rest between loops and observe others on the course.
Key facts:
- 12-Hour Solo
- 12-Hour Team
- 6-Hour Solo
Location details include Monserate Mountain Preserve near 243 Horse Rnch Crk Rd, Fallbrook, CA. The event centers on accumulating loops on a repeated trail circuit rather than on a set point-to-point distance. Visit the organization's website for the most recent information.