| Billings to Chivasso | 5,054.80 mi (8,134.91 km) |
| Billings to Ciampino | 5,385.51 mi (8,667.14 km) |
| Billings to Cicciano | 5,491.83 mi (8,838.24 km) |
| Billings to Cingoli | 5,318.80 mi (8,559.77 km) |
| Billings to Cinisello Balsamo | 5,077.72 mi (8,171.80 km) |
| Billings to Cinisi | 5,601.34 mi (9,014.49 km) |
| Billings to Cirie | 5,043.35 mi (8,116.49 km) |
| Billings to Ciro Marina | 5,661.35 mi (9,111.07 km) |
| Billings to Cislago | 5,064.65 mi (8,150.76 km) |
| Billings to Cisterna di Latina | 5,404.15 mi (8,697.14 km) |
| Billings to Cisternino | 5,593.27 mi (9,001.50 km) |
| Billings to Citta di Castello | 5,283.76 mi (8,503.39 km) |
| Billings to Citta Sant'Angelo | 5,391.06 mi (8,676.07 km) |
| Billings to Cittadella | 5,151.04 mi (8,289.80 km) |
| Billings to Cittanova | 5,686.61 mi (9,151.71 km) |
