The Mammoth Half Marathon & 5K is a premier & breathtaking race event. The race is the 2nd leg of the San Diego - Mammoth Marathon Challenge. Runners who complete both the San Diego Half Marathon & the Mammoth Half Marathon will be awarded a premium San Diego - Mammoth Medal.
Please visit the event's website for more information!
Mammoth Half Marathon & 5k
- Starts at Horseshoe Lake