Lewis represents the 5th Congressional District, which includes portions of DeKalb Commission District 3.
Kids and adults can participate in the event, which is in its fourth year.
Walk It Off, which is sponsored by Community Life Concepts, includes a health fair.
Registration begins at 8:30 a.m. Adults pay $20, and children and students, $10.
The 3-mile run begins at 10 and the walk starts at 10:15, followed by the health fair.
Vendor booths are $100.
Piedmont Park is at 10th Street and Piedmont Avenue in Midtown. For more information, visit www.communitylifeconcepts.org or call 404-459-6320.