| Allentown to Collegno | 4,027.30 mi (6,481.32 km) |
| Allentown to Cologno al Serio | 4,102.10 mi (6,601.70 km) |
| Allentown to Cologno Monzese | 4,085.94 mi (6,575.69 km) |
| Allentown to Colorno | 4,152.85 mi (6,683.37 km) |
| Allentown to Comacchio | 4,237.50 mi (6,819.60 km) |
| Allentown to Comiso | 4,630.85 mi (7,452.63 km) |
| Allentown to Como | 4,068.58 mi (6,547.75 km) |
| Allentown to Concordia Sagittaria | 4,228.65 mi (6,805.35 km) |
| Allentown to Concorezzo | 4,086.40 mi (6,576.42 km) |
| Allentown to Conegliano | 4,201.44 mi (6,761.56 km) |
| Allentown to Conselice | 4,228.96 mi (6,805.86 km) |
| Allentown to Conselve | 4,205.70 mi (6,768.42 km) |
| Allentown to Conversano | 4,586.30 mi (7,380.94 km) |
| Allentown to Copertino | 4,654.03 mi (7,489.93 km) |
| Allentown to Copparo | 4,215.73 mi (6,784.57 km) |
