Rocky Mountain Rage Season Opener, 7 p.m. Oct. 10 at the Broomfield Event Center, 11450 Broomfield Lane, Broomfield.
Atlas Valley Fall Festival, 11 a.m.-3 p.m. Oct. 11, Atlas Valley Shopping Center, 95th and Arapahoe Avenue, Lafayette
Thorne Ecological Natural Night Out, Oct. 11, ExDo Event Center, 1399 35th St., Denver.
Longmont Humane Society Animal Affair, 5:30 p.m. Oct. 18, Radisson Conference Center, 1900 Ken Pratt Blvd, Longmont