| Sidney to Collegno | 4,408.10 mi (7,094.15 km) |
| Sidney to Cologno al Serio | 4,476.82 mi (7,204.74 km) |
| Sidney to Cologno Monzese | 4,461.68 mi (7,180.37 km) |
| Sidney to Colorno | 4,529.16 mi (7,288.99 km) |
| Sidney to Comacchio | 4,611.40 mi (7,421.32 km) |
| Sidney to Comiso | 5,029.61 mi (8,094.37 km) |
| Sidney to Como | 4,443.41 mi (7,150.97 km) |
| Sidney to Concordia Sagittaria | 4,596.55 mi (7,397.43 km) |
| Sidney to Concorezzo | 4,461.75 mi (7,180.50 km) |
| Sidney to Conegliano | 4,569.88 mi (7,354.51 km) |
| Sidney to Conselice | 4,604.32 mi (7,409.94 km) |
| Sidney to Conselve | 4,577.88 mi (7,367.38 km) |
| Sidney to Conversano | 4,965.39 mi (7,991.03 km) |
| Sidney to Copertino | 5,033.79 mi (8,101.11 km) |
| Sidney to Copparo | 4,589.43 mi (7,385.98 km) |
