Mercer, Pennsylvania is close to the interstate highway I-79. It is neighboring other cities: Jackson Center, PA (5.9mi/9m ); Fredonia, PA (8.1mi/13m ); Fairview, PA (6.5mi/10m ). You can get to the city from exit 15 of i80 (3mi/6m ); exit 121 of i79 (21.5mi/26m ); exit 116b a of i79 (9.3mi/12m ). Mercer, Pennsylvania can reach interstate highways: i80 (3mi/6m ); i79 (21.5mi/26m ); i680oh (33.9mi/45m ). It is also close to local highways: US 19 PA (0.1mi/0m ); US 62 PA (0.3mi/1m ); PA 258 (0.7mi/2m ).