Mammoth Half Marathon & 5K


Jun 28, 2020 at 7:30 AM

Mammoth Half Marathon & 5K

Mammoth Lakes CA, 93546


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Entry Fee $45
(Lowest or Early Registration)

Entry Fee 2 $125
(Highest or Late Registration)

Prize Money: no


  • 13.1M
  • 5K

Series: San Diego-Mammoth Challenge

Type: Trail

Participant Limit: 1500

Course Map: Download Map

Starting Elevation: 9000

High Point: 9000

Percent of the course on un-paved trails: 0%

First Year of the Event: 2013

Men's Record: Chad Hall 1:06:26

Women's Record: Bria Wetsch 1:21:24


The Mammoth Half Marathon carries runners over a breathtaking, scenic course through California’s picturesque High Sierra mountains and the Inyo National Forest. The route starts nearly 9,000 ft above sea level at Horseshoe Lake and finishes in downtown Mammoth Lakes (~7,800 ft). Since our inaugural race in 2013, we have added a scenic loop around Lake Mary and brand-new Waterford bridge, making our world-class course even better! The Mammoth Half Marathon is the second race in the San Diego-Mammoth Challenge. **Please note the Mammoth Half Marathon is not a trail race. The course is 99% paved roadway or paved bike path.


No photos available.


Past Event Dates

Held on Jun 28, 2020

Held on Jun 23, 2019

Held on Jun 17, 2018

Held on Jun 18, 2017

Held on Aug 03, 2003

Held on Aug 04, 2002

Held on Aug 05, 2001

Held on Aug 06, 2000

Held on Aug 08, 1999

Held on Aug 02, 1998