TAKE THE CHALLENGE

Finishers of both the 2019 San Diego Half Marathon and 2019 Mammoth Half Marathon will receive an extra-large “San Diego-Mammoth Challenge” spinner medal.  San Diego boasts over 70 miles of coastline, an average daily temperature of 70.5 ºF (21 ºC) and world-class attractions such as SeaWorld, San Diego Zoo, Safari Park, and Legoland California!

DEENA KASTOR’S 2018 MAMMOTH HALF

Watch how Olympian and Mammoth Lakes local, Deena Kastor, cruised to victory at the 2018 Mammoth Half Marathon.

https://youtu.be/RbOTXlG807A

EXPERIENCE THE RACE

LATEST NEWS

The Mammoth Half Marathon is the second half of the San Diego - Mammoth Challenge. Youll complete two spectacularly scenic half marathons for 26.2 miles full of eye-catching sights. First, take a tour of downtown San Diego with the San Diego Half Marathon on March 10. After youve conquered 13.1 miles at sea level its time to head to the mountains. Run the Mammoth Half Marathon with us on June 23 and experience the breathtaking views, net 1,200-foot descent, and magic of the Sierras. Youll also take home our exclusive Challenge medal to commemorate your accomplishments!
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Youll need to hurry, registration prices for the San Diego Half Marathon increase at midnight on Sunday, March 3. Theres still time to join us, learn more or register now: https://www.mammothhalfmarathon.com/challenge/!

The Mammoth Half Marathon is the second half of the San Diego - Mammoth Challenge. You'll complete two spectacularly scenic half marathons for 26.2 miles full of eye-catching sights. First, take a tour of downtown San Diego with the San Diego Half Marathon on March 10. After you've conquered 13.1 miles at sea level it's time to head to the mountains. Run the Mammoth Half Marathon with us on June 23 and experience the breathtaking views, net 1,200-foot descent, and magic of the Sierras. You'll also take home our exclusive Challenge medal to commemorate your accomplishments!
.
.
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You'll need to hurry, registration prices for the San Diego Half Marathon increase at midnight on Sunday, March 3. There's still time to join us, learn more or register now: www.mammothhalfmarathon.com/challenge/!
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03.02.19

 

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The only reason I do the San Diego Half is for the Challenge. Mammoth by far is my favorite. Breathtaking views.

OUR UNIQUE VISION

As a nonprofit 501(c)(3), the Mammoth Half Marathon benefits charity partners and community service projects, with 100% of our net proceeds going to local causes.

VISIT BEAUTIFUL MAMMOTH LAKES

Elite runners, including current and former Olympians, take advantage of training in Mammoth’s picturesque scenery and high altitude to prepare for their season.  Follow in the footsteps of world-class elite runners and discover the town of Mammoth Lakes, located in the heart of the California’s Eastern Sierra Mountains!  Mammoth Lakes is home to one of the country’s top ski and snowboarding resorts in the winter and serves as an equally beautiful summer vacation.  Visit Travel & Hotels to book a room at one of our preferred hotels.

RUN + SKI

Save on both the 2018/2019 Mammoth Mountain adult lift ticket and a 2019 Mammoth Half Marathon entry!

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COUNTDOWN TO RACE DAY

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