| Potomac to Capodrise | 4,597.37 mi (7,398.76 km) |
| Potomac to Capoterra | 4,423.89 mi (7,119.57 km) |
| Potomac to Capriolo | 4,248.71 mi (6,837.63 km) |
| Potomac to Capua | 4,591.53 mi (7,389.36 km) |
| Potomac to Capurso | 4,712.01 mi (7,583.24 km) |
| Potomac to Carate Brianza | 4,212.50 mi (6,779.37 km) |
| Potomac to Caravaggio | 4,240.81 mi (6,824.92 km) |
| Potomac to Carbonera | 4,346.80 mi (6,995.50 km) |
| Potomac to Carbonia | 4,403.39 mi (7,086.57 km) |
| Potomac to Cardito | 4,601.05 mi (7,404.68 km) |
| Potomac to Carignano | 4,174.62 mi (6,718.40 km) |
| Potomac to Carini | 4,655.19 mi (7,491.80 km) |
| Potomac to Carlentini | 4,771.20 mi (7,678.51 km) |
| Potomac to Carmagnola | 4,178.31 mi (6,724.34 km) |
| Potomac to Carmiano | 4,788.22 mi (7,705.90 km) |
