Run Fur Fun 5K early bird registration (for just $25) ends at midnight on May 16th! REGISTER NOW and join us on Sunday, June 12th at City Park in Fort Collins for the run/walk and the K9 Care Fair! Care Fair admission is included with your race registration fee. 5K starts at 8 a.m. Kids's race starts at 9 a.m. K9 Care Fair is from 8:30-11:00 a.m.