Join Mayor Karl Dean at the 'Walk 100 Miles' finale from 5 to 8 p.m., Saturday, at the Public Square Park in front of the historic Metro Courthouse. Bring your family and friends -- there will be plenty of activities for your children; some of Nashville's most-popular food trucks will be selling food and drinks; and Jo Dee Messina, Melinda Doolitte and Jeremy Lister will provide musical entertainment. it's going to be a fun party to wrap up the challenge!