Don a jolly holiday getup and tie jingle bells to your shoes for this charitable 5K. Participants can walk or run around the beautiful Washington Park course, and little ones can join in the fun with the "snowman scramble," which will take place shortly before the real race. Proceeds benefit the Arthritis Foundation, a national nonprofit dedicated to the prevention and cure of arthritis. Sun 8 a.m.-noon.
Visit jinglebellrundenver.org .