THE CHALLENGE

Take the “San Diego-Mammoth Challenge” by completing both of these spectacularly scenic half marathons in the same calendar year – and earn an extra large spinner medal!

San Diego is featured on one side...and Mammoth on the other!
San Diego is featured on one side...and Mammoth on the other!

2018 CHALLENGE REGISTRATION & FEES

  • Prior to March 11, 2018: you can Register for both the Mammoth Half Marathon (June 17) and the San Diego Half Marathon (March 11) by selecting the “Take the Challenge” upgrade during registration.
  • If this option was not available to you when you registered or if  it’s after March 11th and you ran the 2018 San Diego Half Marathon: you can purchase a “Take the Challenge” upgrade by visiting our online Store.

Note: Whether you purchase the Challenge upgrade during registration or register for each race separately, you will automatically be entered into the Challenge.

TRAIN LIKE AN OLYMPIAN

Elite runners, including current and former Olympians, take advantage of training in Mammoth’s picturesque scenery and high altitude to prepare for their season. By running both half marathons, you will literally be following in the footsteps of world-class elite runners!

COURSE MAPS

San Diego Highlight Video

2014

https://vimeo.com/117643480

VISIT SAN DIEGO

Escape the cold and run in one of the most beautiful cities in the world! 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 and Safari Park, and Legoland California! Visit Travel & Hotels to book a room at one of our preferred hotels before they sell out.

DISCOVER MAMMOTH

The Town of Mammoth Lakes is located in the heart of California’s Eastern Sierra Nevada mountain range, located 325 miles north of Los Angeles, about the same distance east of San Francisco and 164 miles south of Reno, Nevada. The town is only 45 minutes from Yosemite National Park. 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 destination.