Mainstay Independent Brewing Co. is releasing a cycling-themed beer in honor of the return of the Philadelphia Cycling Classic. The Philadelphia Classic Lager, is a Vienna-style brew with "balanced hop and malt character," according to Mainstay, which is debuting the beer Thursday at a pep rally at Craft Hall in Northern Liberties. It also will be available on draft at the Philadelphia Cycling Classic Fan Fest, held near the Iroquois Sculpture on the Benjamin Franklin Parkway from Aug. 29-30, and at Parks on Tap at Lemon Hill from Aug. 26-30. The Philadelphia Cycling Classic was established in 1985 as a prestigious international race sanctioned by USA Cycling and Union Cycliste International. The course is a 14.4-mile loop that begins at the Philadelphia Museum of Art, then heads along Kelly Drive and into Manayunk.