Event Description The Frost or Fog 10-Mile, Quarter Marathon and 5K is one of Chico’s favorite winter runs! Join us in Upper Bidwell Park for great, challenging courses that cover gravel, trail and road! Event Location & Accomodations Trending Events Valley To The Sea Half Marathon & 5k/10k Muddy Dash | Honolulu | February 15th Hilo Bay Jingle Bell 5k