| Tucson to Collegno | 5,853.62 mi (9,420.50 km) |
| Tucson to Cologno al Serio | 5,906.51 mi (9,505.61 km) |
| Tucson to Cologno Monzese | 5,894.13 mi (9,485.69 km) |
| Tucson to Colorno | 5,961.49 mi (9,594.09 km) |
| Tucson to Comacchio | 6,036.04 mi (9,714.07 km) |
| Tucson to Comiso | 6,506.76 mi (10,471.61 km) |
| Tucson to Como | 5,874.12 mi (9,453.48 km) |
| Tucson to Concordia Sagittaria | 6,006.93 mi (9,667.21 km) |
| Tucson to Concorezzo | 5,893.31 mi (9,484.37 km) |
| Tucson to Conegliano | 5,982.24 mi (9,627.48 km) |
| Tucson to Conselice | 6,032.68 mi (9,708.66 km) |
| Tucson to Conselve | 5,999.14 mi (9,654.68 km) |
| Tucson to Conversano | 6,395.08 mi (10,291.89 km) |
| Tucson to Copertino | 6,463.75 mi (10,402.39 km) |
| Tucson to Copparo | 6,014.12 mi (9,678.79 km) |
