The Friends of Claude Moore Park are sponsoring the annual "5K Run & Smile-Mile Walk" on Saturday, May 12, at 8 a.m. The 5K (3.1 miles) cross-country run and one-mile, fun hiking course wind through the wooded trails and historic roads of Claude Moore Park. Registration for the run is $25; the walk fee is $15. Both are payable on the day of the race. Call 571-258-3700.