GECKO presents “Sweaty Santa,” a noncompetitive 3k and 5k run-jog-walk (or snowshoe), 10 a.m. at the Ross Aragon Community Center. A family event for all ages and abilities starts and finishes at the center. Get some fresh air on this downtown route that will be held snow or shine (bring your snowshoes if you need to!) $15 for 5k and $12 for 3k for adults. Kids 10 and under are free. Registration on the day only, from 9 a.m.