| Seaham to Cookeville (Tennessee) | 4,009.47 mi (6,452.62 km) |
| Seaham to Coolidge (Arizona) | 5,104.26 mi (8,214.51 km) |
| Seaham to Coon Rapids (Minnesota) | 3,837.06 mi (6,175.15 km) |
| Seaham to Cooper City (Florida) | 4,334.24 mi (6,975.29 km) |
| Seaham to Coos Bay (Oregon) | 4,869.41 mi (7,836.56 km) |
| Seaham to Copiague (New York) | 3,325.71 mi (5,352.21 km) |
| Seaham to Coppell (Texas) | 4,601.10 mi (7,404.76 km) |
| Seaham to Copperas Cove (Texas) | 4,734.67 mi (7,619.71 km) |
| Seaham to Coral Gables (Florida) | 4,351.95 mi (7,003.78 km) |
| Seaham to Coral Springs (Florida) | 4,321.24 mi (6,954.36 km) |
| Seaham to Coral Terrace (Florida) | 4,350.99 mi (7,002.23 km) |
| Seaham to Coralville (Iowa) | 3,951.14 mi (6,358.74 km) |
| Seaham to Coram (New York) | 3,300.98 mi (5,312.42 km) |
| Seaham to Corcoran (California) | 5,171.24 mi (8,322.31 km) |
| Seaham to Cordele (Georgia) | 4,158.95 mi (6,693.19 km) |
