| Keystone to Colton (California) | 2,084.63 mi (3,354.88 km) |
| Keystone to Columbia (Illinois) | 837.42 mi (1,347.69 km) |
| Keystone to Columbia (Maryland) | 832.53 mi (1,339.82 km) |
| Keystone to Columbia (Missouri) | 932.67 mi (1,500.99 km) |
| Keystone to Columbia (Pennsylvania) | 892.98 mi (1,437.12 km) |
| Keystone to Columbia (South Carolina) | 420.25 mi (676.32 km) |
| Keystone to Columbia (Tennessee) | 579.57 mi (932.73 km) |
| Keystone to Columbia Heights (Minnesota) | 1,306.91 mi (2,103.28 km) |
| Keystone to Columbine (Colorado) | 1,506.28 mi (2,424.13 km) |
| Keystone to Columbus (Georgia) | 331.60 mi (533.67 km) |
| Keystone to Columbus (Indiana) | 788.68 mi (1,269.26 km) |
| Keystone to Columbus (Mississippi) | 506.64 mi (815.35 km) |
| Keystone to Columbus (Nebraska) | 1,239.90 mi (1,995.43 km) |
| Keystone to Columbus (Ohio) | 819.40 mi (1,318.69 km) |
| Keystone to Commack (New York) | 1,024.69 mi (1,649.08 km) |
