| Keystone to Scottsboro (Alabama) | 493.73 mi (794.58 km) |
| Keystone to Scottsdale (Arizona) | 1,770.49 mi (2,849.33 km) |
| Keystone to Scranton (Pennsylvania) | 997.11 mi (1,604.69 km) |
| Keystone to Seabrook (Maryland) | 818.96 mi (1,318.00 km) |
| Keystone to Seabrook (Texas) | 758.04 mi (1,219.94 km) |
| Keystone to Seaford (New York) | 1,008.52 mi (1,623.06 km) |
| Keystone to Seagoville (Texas) | 887.02 mi (1,427.52 km) |
| Keystone to Seal Beach (California) | 2,126.94 mi (3,422.97 km) |
| Keystone to Searcy (Arkansas) | 727.24 mi (1,170.38 km) |
| Keystone to Seaside (California) | 2,345.23 mi (3,774.29 km) |
| Keystone to SeaTac (Washington) | 2,506.27 mi (4,033.45 km) |
| Keystone to Seattle (Washington) | 2,511.17 mi (4,041.33 km) |
| Keystone to Sebastian (Florida) | 131.49 mi (211.61 km) |
| Keystone to Sebring (Florida) | 83.40 mi (134.23 km) |
| Keystone to Secaucus (New Jersey) | 998.91 mi (1,607.60 km) |
