| Big Spring to Cortona | 5,740.43 mi (9,238.34 km) |
| Big Spring to Cosenza | 6,086.47 mi (9,795.23 km) |
| Big Spring to Cossato | 5,494.56 mi (8,842.64 km) |
| Big Spring to Costa Volpino | 5,558.68 mi (8,945.83 km) |
| Big Spring to Creazzo | 5,624.16 mi (9,051.22 km) |
| Big Spring to Crema | 5,561.91 mi (8,951.03 km) |
| Big Spring to Cremona | 5,585.21 mi (8,988.53 km) |
| Big Spring to Crevalcore | 5,646.07 mi (9,086.47 km) |
| Big Spring to Crispiano | 6,065.48 mi (9,761.44 km) |
| Big Spring to Crosia | 6,094.84 mi (9,808.69 km) |
| Big Spring to Crotone | 6,131.07 mi (9,867.00 km) |
| Big Spring to Cuneo | 5,517.92 mi (8,880.23 km) |
| Big Spring to Cuorgne | 5,481.38 mi (8,821.42 km) |
| Big Spring to Cusano Milanino | 5,534.92 mi (8,907.59 km) |
| Big Spring to Cutro | 6,128.05 mi (9,862.14 km) |
