| Seaham to Cicero (Illinois) | 3,806.84 mi (6,126.52 km) |
| Seaham to Cimarron Hills (Colorado) | 4,548.91 mi (7,320.76 km) |
| Seaham to Cincinnati (Ohio) | 3,821.19 mi (6,149.61 km) |
| Seaham to Cinco Ranch (Texas) | 4,730.73 mi (7,613.37 km) |
| Seaham to Circleville (Ohio) | 3,739.49 mi (6,018.13 km) |
| Seaham to Citrus (California) | 5,236.72 mi (8,427.68 km) |
| Seaham to Citrus Heights (California) | 5,067.13 mi (8,154.75 km) |
| Seaham to Citrus Park (Florida) | 4,316.01 mi (6,945.95 km) |
| Seaham to Claiborne (Louisiana) | 4,448.00 mi (7,158.36 km) |
| Seaham to Claremont (California) | 5,230.85 mi (8,418.24 km) |
| Seaham to Claremont (New Hampshire) | 3,160.98 mi (5,087.10 km) |
| Seaham to Claremore (Oklahoma) | 4,372.27 mi (7,036.48 km) |
| Seaham to Clarksburg (Maryland) | 3,543.34 mi (5,702.46 km) |
| Seaham to Clarksburg (West Virginia) | 3,656.86 mi (5,885.15 km) |
| Seaham to Clarksdale (Mississippi) | 4,299.97 mi (6,920.13 km) |
