Mercer Raceway Park is a 3/8-mile dirt track located minutes from both Interstate 79 and 80 just off Route 19 on Fairground R ... oad in Mercer, Pa. Dirt track racing and quality family entertainment are presented weekly from late March through early October. For more information, check out www.mercerracewaypark, www.twitter.com/mercerraceway, or www.facebook.com/mercerracewaypark. read more