Mammoth Run
Next date not announced · last held Sun, Oct 4 Moorpark, CA
10K5K1 mile
Race website & registration Your chances
Where would you finish?
Enter your race pace or connect Strava, and raceIQ compares you with this race's past finishers in your age group and gender.
See your predicted place7th
of ~140
Age group
Finish times
From the 2026 results.
Field strength
5KCasual
Faster up front than 25% of the 5K races we track, based on 74 finishers over 1 edition.
Upcoming races nearby
All races in California- Hauntington Park 5K 2026Wed, Oct 28 · Huntington Park, CA
- 2026 Lake Casitas Short Course Championships (Middle School Racer Sign Ups ONLY)Fri, Oct 30 · Ventura, CA
- Los Muertos 5K - Los AngelesSat, Oct 31 · Los Angeles, CA
- Happy Halloween Half MarathonSat, Oct 31 · Long Beach, CA
- The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow RunsSat, Oct 31 · Long Beach, CA
- Halloween Trick or Trot Run 5K/10K/13.1 LOS ANGELESSat, Oct 31 · Los Angeles, CA