| Prospect Heights to Collegno | 4,482.70 mi (7,214.20 km) |
| Prospect Heights to Cologno al Serio | 4,546.07 mi (7,316.19 km) |
| Prospect Heights to Cologno Monzese | 4,531.83 mi (7,293.27 km) |
| Prospect Heights to Colorno | 4,599.51 mi (7,402.20 km) |
| Prospect Heights to Comacchio | 4,679.41 mi (7,530.78 km) |
| Prospect Heights to Comiso | 5,117.86 mi (8,236.40 km) |
| Prospect Heights to Como | 4,512.88 mi (7,262.79 km) |
| Prospect Heights to Concordia Sagittaria | 4,659.76 mi (7,499.15 km) |
| Prospect Heights to Concorezzo | 4,531.59 mi (7,292.89 km) |
| Prospect Heights to Conegliano | 4,633.63 mi (7,457.11 km) |
| Prospect Heights to Conselice | 4,673.57 mi (7,521.39 km) |
| Prospect Heights to Conselve | 4,644.63 mi (7,474.80 km) |
| Prospect Heights to Conversano | 5,036.36 mi (8,105.23 km) |
| Prospect Heights to Copertino | 5,105.08 mi (8,215.83 km) |
| Prospect Heights to Copparo | 4,657.38 mi (7,495.33 km) |
