| Seaham to Cloverly (Maryland) | 3,538.83 mi (5,695.20 km) |
| Seaham to Clovis (California) | 5,131.10 mi (8,257.71 km) |
| Seaham to Clovis (New Mexico) | 4,740.20 mi (7,628.62 km) |
| Seaham to Clute (Texas) | 4,756.08 mi (7,654.17 km) |
| Seaham to Coachella (California) | 5,207.88 mi (8,381.27 km) |
| Seaham to Coalinga (California) | 5,190.13 mi (8,352.70 km) |
| Seaham to Coamo (Puerto Rico) | 4,214.62 mi (6,782.78 km) |
| Seaham to Coatesville (Pennsylvania) | 3,451.46 mi (5,554.59 km) |
| Seaham to Cockeysville (Maryland) | 3,506.63 mi (5,643.38 km) |
| Seaham to Cocoa (Florida) | 4,229.31 mi (6,806.41 km) |
| Seaham to Cocoa Beach (Florida) | 4,226.40 mi (6,801.74 km) |
| Seaham to Coconut Creek (Florida) | 4,317.75 mi (6,948.74 km) |
| Seaham to Coeur d'Alene (Idaho) | 4,422.87 mi (7,117.92 km) |
| Seaham to Cohoes (New York) | 3,240.68 mi (5,215.37 km) |
| Seaham to Cold Springs (Nevada) | 4,971.57 mi (8,000.97 km) |
