The Black Hills Runners Club presents its 4th annual Trail Running Series, set in the Black Hills of South Dakota and Wyoming's Bear Lodge Mountains. Save $$ by saving on the Active.com fees by registering for more than one race.... If you plan ( and we hope you do! ) on running most or all of the BHRC races, you'll save by registering at one time for your desired races as Active calculates a percentage each time you register. Applies to BHRC races only.