13th Annual Polar Bear 5K

Runners and hikers are invited to participate in the Lancaster Group of the Sierra Club’s event in scenic Lancaster County Central Park. Participants may bring their dogs (on a leash) to run or walk with them. Winter hats for all those who preregister by January 13 and beanies with the Polar Bear 5K logo for all who preregister by January 5. 1050 Rockford Rd., Lancaster. Race day registration and check-in at 8:30 a.m. at the park’s Pavilion 22. $30–$35. LancasterSierraClub.org.