| Allentown to Castrovillari | 4,590.92 mi (7,388.37 km) |
| Allentown to Catania | 4,631.60 mi (7,453.84 km) |
| Allentown to Catanzaro | 4,644.31 mi (7,474.29 km) |
| Allentown to Cattolica | 4,286.62 mi (6,898.65 km) |
| Allentown to Cava de' Tirreni | 4,491.27 mi (7,228.00 km) |
| Allentown to Cavallino | 4,658.54 mi (7,497.20 km) |
| Allentown to Cavarzere | 4,218.09 mi (6,788.36 km) |
| Allentown to Cave | 4,372.44 mi (7,036.76 km) |
| Allentown to Cavriago | 4,167.14 mi (6,706.36 km) |
| Allentown to Cavriglia | 4,248.70 mi (6,837.62 km) |
| Allentown to Cazzago San Martino | 4,116.00 mi (6,624.06 km) |
| Allentown to Ceccano | 4,399.09 mi (7,079.66 km) |
| Allentown to Cecina | 4,213.71 mi (6,781.31 km) |
| Allentown to Cefalu | 4,562.39 mi (7,342.45 km) |
| Allentown to Ceglie Messapico | 4,615.19 mi (7,427.43 km) |
