| Potomac Park to Caltagirone | 6,601.03 mi (10,623.33 km) |
| Potomac Park to Caltanissetta | 6,572.27 mi (10,577.04 km) |
| Potomac Park to Calvisano | 6,025.75 mi (9,697.51 km) |
| Potomac Park to Calvizzano | 6,387.12 mi (10,279.07 km) |
| Potomac Park to Camaiore | 6,100.15 mi (9,817.24 km) |
| Potomac Park to Cameri | 5,965.13 mi (9,599.95 km) |
| Potomac Park to Camisano Vicentino | 6,058.27 mi (9,749.84 km) |
| Potomac Park to Campagna | 6,428.47 mi (10,345.62 km) |
| Potomac Park to Campagnano di Roma | 6,262.97 mi (10,079.27 km) |
| Potomac Park to Campi Bisenzio | 6,132.48 mi (9,869.27 km) |
| Potomac Park to Campi Salentina | 6,531.27 mi (10,511.06 km) |
| Potomac Park to Campiglia Marittima | 6,156.65 mi (9,908.16 km) |
| Potomac Park to Campobasso | 6,364.92 mi (10,243.36 km) |
| Potomac Park to Campobello di Licata | 6,580.76 mi (10,590.71 km) |
| Potomac Park to Campobello di Mazara | 6,520.94 mi (10,494.44 km) |
