| Round Rock to Caltagirone | 6,026.29 mi (9,698.37 km) |
| Round Rock to Caltanissetta | 5,996.04 mi (9,649.69 km) |
| Round Rock to Calvisano | 5,525.33 mi (8,892.15 km) |
| Round Rock to Calvizzano | 5,860.52 mi (9,431.59 km) |
| Round Rock to Camaiore | 5,577.85 mi (8,976.69 km) |
| Round Rock to Cameri | 5,450.77 mi (8,772.16 km) |
| Round Rock to Camisano Vicentino | 5,573.84 mi (8,970.23 km) |
| Round Rock to Campagna | 5,908.55 mi (9,508.89 km) |
| Round Rock to Campagnano di Roma | 5,735.10 mi (9,229.75 km) |
| Round Rock to Campi Bisenzio | 5,616.73 mi (9,039.25 km) |
| Round Rock to Campi Salentina | 6,040.46 mi (9,721.18 km) |
| Round Rock to Campiglia Marittima | 5,624.52 mi (9,051.79 km) |
| Round Rock to Campobasso | 5,853.10 mi (9,419.66 km) |
| Round Rock to Campobello di Licata | 5,999.54 mi (9,655.32 km) |
| Round Rock to Campobello di Mazara | 5,932.28 mi (9,547.08 km) |
