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

The landscapes of both races are on one side...and max elevations are on the other!


  • If you already registered for the 2020 San Diego Half Marathon and would like to purchase the “Take the Challenge” upgrade to include a Virtual Mammoth Half Marathon, please visit our online Store.
  • You can register simultaneously for both the Virtual San Diego Half Marathon and the Virtual Mammoth Half Marathon  by selecting the “Take the Challenge” upgrade during registration.

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

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