The third annual Philly Free Streets event will take place Aug. 11 on four miles of North Broad Street between City Hall and Erie Avenue.
The stretch will be shut down to motorists, but accessible to pedestrians and cyclists.
Mayor Kenney announced the details of the 2018 event on Friday.
Philly Free Streets was inspired by Pope Francis' visit in September 2015 and its numerous security-based road closures, which allowed pedestrians to walk freely in streets across Center City.
The first Free Streets event happened in September 2016, when 10 miles of city streets were closed to motor vehicle traffic, including South Street from the Delaware River to the Schuylkill. Thousands of walkers, runners, and bicyclists took part.