The East Side Riders Cycling Club (ESR) is the largest Cycling Club in Essex County. The group is based in the Town of Tecumseh (just east of Windsor Ontario). Informally created by a handful of road riding enthusiasts in 2008 and registered as an Ontario Cycling Association (OCA) affiliated club on June 4, 2012. The group currently has over 200 members who group ride in close formation and race mainly in Essex County.