| Seaham to Carson (California) | 5,264.18 mi (8,471.88 km) |
| Seaham to Carson City (Nevada) | 4,996.74 mi (8,041.48 km) |
| Seaham to Carteret (New Jersey) | 3,361.94 mi (5,410.51 km) |
| Seaham to Cartersville (Georgia) | 4,084.19 mi (6,572.88 km) |
| Seaham to Carthage (Missouri) | 4,282.13 mi (6,891.42 km) |
| Seaham to Cary (Illinois) | 3,806.32 mi (6,125.68 km) |
| Seaham to Cary (North Carolina) | 3,772.41 mi (6,071.11 km) |
| Seaham to Casa de Oro-Mount Helix (California) | 5,287.51 mi (8,509.43 km) |
| Seaham to Casa Grande (Arizona) | 5,113.66 mi (8,229.65 km) |
| Seaham to Casas Adobes (Arizona) | 5,121.33 mi (8,241.98 km) |
| Seaham to Cascades (Virginia) | 3,556.61 mi (5,723.81 km) |
| Seaham to Casper (Wyoming) | 4,384.90 mi (7,056.82 km) |
| Seaham to Casselberry (Florida) | 4,236.26 mi (6,817.60 km) |
| Seaham to Castaic (California) | 5,237.72 mi (8,429.30 km) |
| Seaham to Castle Pines (Colorado) | 4,521.70 mi (7,276.97 km) |
