| Potomac Park to Corato | 6,440.67 mi (10,365.26 km) |
| Potomac Park to Corbetta | 5,975.23 mi (9,616.21 km) |
| Potomac Park to Corciano | 6,205.24 mi (9,986.38 km) |
| Potomac Park to Cordenons | 6,061.95 mi (9,755.77 km) |
| Potomac Park to Cori | 6,306.34 mi (10,149.07 km) |
| Potomac Park to Coriano | 6,169.39 mi (9,928.68 km) |
| Potomac Park to Corigliano Calabro | 6,531.91 mi (10,512.10 km) |
| Potomac Park to Corleone | 6,529.15 mi (10,507.65 km) |
| Potomac Park to Cormano | 5,978.62 mi (9,621.66 km) |
| Potomac Park to Cornaredo | 5,977.11 mi (9,619.24 km) |
| Potomac Park to Cornate d'Adda | 5,982.62 mi (9,628.10 km) |
| Potomac Park to Cornedo Vicentino | 6,041.84 mi (9,723.40 km) |
| Potomac Park to Correggio | 6,070.22 mi (9,769.07 km) |
| Potomac Park to Corridonia | 6,236.57 mi (10,036.79 km) |
| Potomac Park to Corsico | 5,983.24 mi (9,629.10 km) |
