The City of Philadelphia has a variety of trails, including the major Schuylkill River Trail and the East Coast Greenway. Most Philadelphia trails are within the Fairmount Park system, managed by Philadelphia Parks and Recreation. These major watershed trails are within various parks, such as the Wissahickon Valley Park, Pennypack Park, Poquessing Creek Park, Tacony Creek Park, and Cobbs Creek Park. In addition, trails exist within East and West Fairmount Park, along the Schuylkill and Delaware Rivers, and FDR Park.
Getting to the trails is half the fun, take a look at the City of Philadelphia's Bike Map to find the best routes.