| Effingham to Collegno | 4,639.63 mi (7,466.76 km) |
| Effingham to Cologno al Serio | 4,706.27 mi (7,574.01 km) |
| Effingham to Cologno Monzese | 4,691.49 mi (7,550.22 km) |
| Effingham to Colorno | 4,759.09 mi (7,659.01 km) |
| Effingham to Comacchio | 4,840.41 mi (7,789.89 km) |
| Effingham to Comiso | 5,266.20 mi (8,475.14 km) |
| Effingham to Como | 4,672.94 mi (7,520.37 km) |
| Effingham to Concordia Sagittaria | 4,823.54 mi (7,762.74 km) |
| Effingham to Concorezzo | 4,691.44 mi (7,550.14 km) |
| Effingham to Conegliano | 4,797.09 mi (7,720.18 km) |
| Effingham to Conselice | 4,833.84 mi (7,779.31 km) |
| Effingham to Conselve | 4,806.36 mi (7,735.08 km) |
| Effingham to Conversano | 5,195.75 mi (8,361.74 km) |
| Effingham to Copertino | 5,264.30 mi (8,472.08 km) |
| Effingham to Copparo | 4,818.41 mi (7,754.48 km) |
