| Billings to Collegno | 5,050.71 mi (8,128.33 km) |
| Billings to Cologno al Serio | 5,090.96 mi (8,193.10 km) |
| Billings to Cologno Monzese | 5,080.77 mi (8,176.71 km) |
| Billings to Colorno | 5,146.75 mi (8,282.89 km) |
| Billings to Comacchio | 5,214.56 mi (8,392.03 km) |
| Billings to Comiso | 5,717.78 mi (9,201.88 km) |
| Billings to Como | 5,059.90 mi (8,143.13 km) |
| Billings to Concordia Sagittaria | 5,176.65 mi (8,331.01 km) |
| Billings to Concorezzo | 5,079.33 mi (8,174.38 km) |
| Billings to Conegliano | 5,153.67 mi (8,294.03 km) |
| Billings to Conselice | 5,213.82 mi (8,390.83 km) |
| Billings to Conselve | 5,176.07 mi (8,330.08 km) |
| Billings to Conversano | 5,570.57 mi (8,964.97 km) |
| Billings to Copertino | 5,638.21 mi (9,073.83 km) |
| Billings to Copparo | 5,193.08 mi (8,357.45 km) |
