| Sumner to Caltagirone | 6,019.19 mi (9,686.95 km) |
| Sumner to Caltanissetta | 5,992.19 mi (9,643.49 km) |
| Sumner to Calvisano | 5,424.65 mi (8,730.12 km) |
| Sumner to Calvizzano | 5,787.34 mi (9,313.82 km) |
| Sumner to Camaiore | 5,507.66 mi (8,863.72 km) |
| Sumner to Cameri | 5,373.13 mi (8,647.21 km) |
| Sumner to Camisano Vicentino | 5,448.16 mi (8,767.97 km) |
| Sumner to Campagna | 5,823.98 mi (9,372.79 km) |
| Sumner to Campagnano di Roma | 5,667.91 mi (9,121.62 km) |
| Sumner to Campi Bisenzio | 5,535.57 mi (8,908.64 km) |
| Sumner to Campi Salentina | 5,909.24 mi (9,510.01 km) |
| Sumner to Campiglia Marittima | 5,567.32 mi (8,959.74 km) |
| Sumner to Campobasso | 5,758.44 mi (9,267.32 km) |
| Sumner to Campobello di Licata | 6,003.07 mi (9,661.01 km) |
| Sumner to Campobello di Mazara | 5,949.29 mi (9,574.46 km) |
