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Mammoth Half Marathon & 5K

Date / Time
Jun 23 / 6:00 AM - 12:00 PM
Mammoth Lakes, CA
Summer Fun, Summer Events, Summer Adventure

A Breathtaking Route through the Picturesque Eastern Sierra

Join a limited field of 1,500 runners on a scenic 13.1 mile half marathon course starting at Horseshoe Lake and finishing in downtown Mammoth Lakes. The 7th Annual Mammoth Half Marathon & 5K takes place on Sunday, June 23, 2019, and the whole family can participate with a choice between the half marathon or 5K course (only 3.1 miles).

Book your room by June 10 to lock in special lodging rates for racers starting at $109/night, see details below.

Event Registration

Half Marathon

The Mammoth Half Marathon is a premier race event and the second leg of the San Diego – Mammoth Challenge. The race is organized by the San Diego Half Marathon team. 100% of the net proceeds from the Mammoth Half Marathon & 5K event will go towards community service projects and select charitable causes in Mammoth Lakes.

5K Race

The Mammoth 5K is a 3.1-mile race through downtown Mammoth Lakes, designed for all ages and abilities to enjoy.

Save $10 on entry – enter code MAMMOTHMTN at registration checkout.

Register Now

Event Schedule 

SAT, JUNE 22  |  Packet Pick-Up Day


Packet pick-up at the Mountain Center in The Village


Shuttles begin transport up to the Half Marathon start from all partnering hotels. Arrive early – last shuttle departs at approx. 6:30am.
7:30AM Half Marathon wave 1 starts at Horseshoe Lake (subsequent waves to follow, 2 mins apart)
7:30AM–12PM Race finish and downtown Celebrate Mammoth Block Party. Invite your friends and family.

Schedule subject to change

Racer Lodging Discount

Starting at $109/night

Stay with great deals for Mammoth Half Marathon race participants at The Village Lodge – the race headquarter hotel, as well as Juniper Springs Resort or Mammoth Mountain Inn.

Book Lodging


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