| Billings to Cortona | 5,285.91 mi (8,506.85 km) |
| Billings to Cosenza | 5,638.28 mi (9,073.94 km) |
| Billings to Cossato | 5,043.95 mi (8,117.46 km) |
| Billings to Costa Volpino | 5,090.12 mi (8,191.75 km) |
| Billings to Creazzo | 5,148.26 mi (8,285.33 km) |
| Billings to Crema | 5,101.94 mi (8,210.78 km) |
| Billings to Cremona | 5,125.22 mi (8,248.25 km) |
| Billings to Crevalcore | 5,182.04 mi (8,339.69 km) |
| Billings to Crispiano | 5,594.83 mi (9,004.01 km) |
| Billings to Crosia | 5,639.14 mi (9,075.32 km) |
| Billings to Crotone | 5,677.23 mi (9,136.61 km) |
| Billings to Cuneo | 5,086.30 mi (8,185.60 km) |
| Billings to Cuorgne | 5,036.86 mi (8,106.05 km) |
| Billings to Cusano Milanino | 5,076.68 mi (8,170.12 km) |
| Billings to Cutro | 5,675.97 mi (9,134.59 km) |
