The Course

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!

Perks & Pricing


  • Finisher’s Medal

  • Scenic Course

  • Personalized Bib

  • Long-sleeved Technical Shirt


  • DEC 2 - JAN 6
    • JAN 7 - FEB 2
      • EXPO

        The Mammoth Half Marathon is limited to 1,500 participants.


        2018 MHM Medal

        “Like” us on Facebook to see all of our perks as they’re announced!

        ...it's time to REGISTER.
        ...it's time to TRAIN.
        ...it's time to RACE!


        • Personalize your bib (by May 22)



        • Purchase upgrades during registration

          • VIP upgrade includes pre- and post-race receptions and restrooms
          • Race day packet pick-up upgrade
          • The San Diego – Mammoth Challenge upgrade


        • Reach your goal

          • Complete 13.1 miles
          • See our pace table to estimate your finish time
          • Mammoth Track Club & Rock Runner Pace Team supports goal finish times of: 1:45, 2:00, 2:15, 2:30
          • Course time limit: 4:00hr (18min/mi pace)

        • Download a training plan

          • Advanced


        Sunday, June 23, 2019


        • Pick up your Race Packet at the Mountain Center

        • Start/Finish in Mammoth Lakes

          • Start at Horseshoe Lake and finish in downtown Mammoth Lakes.  Complimentary race day shuttles for participants to/from the start and finish are provided from all our preferred Hotels

        • Share Results and Spectator Guide

        • Awards

          • Overall, Masters overall, top 3 in each age group

        • Celebrate Mammoth Lakes – and your finish

          • Special offers at participating businesses in downtown Mammoth Lakes

        *All times are approximate.

        Helpful Tips

        • Review the course maps, altitude and elevation profile listed above
        • Hydrate well before and during the race
        • Train with the provided course nutrition so that nothing is new to you on race day
        • Review our Safety Tips and Race Day Checklist and High Altitude Tips

        Course Nutrition

        On-course Ultima flavor: Cherry Pomegranate and/or Orange


        On-Course Clif Shot Flavors: Vanilla, Razz, Citrus w/caffeine and Mocha w/caffeine


        Race weekend parking and driving directions are included in our final instructions.

        The final instructions link will be available the Monday before race week and will also be posted to our Facebook page.

        Drop Us A Note

        Have a question you can't find the answer to? We'd love to help!

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