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 RMRR June 6th 2021 - 4K Race at Bible Park McCall Wolf Pack Weekend (25K) Rock 'N The Knob Trail Challenge – PA’s Highest Trail Race