| Allentown to Corato | 4,548.25 mi (7,319.70 km) |
| Allentown to Corbetta | 4,072.52 mi (6,554.10 km) |
| Allentown to Corciano | 4,296.80 mi (6,915.03 km) |
| Allentown to Cordenons | 4,214.93 mi (6,783.28 km) |
| Allentown to Cori | 4,377.82 mi (7,045.41 km) |
| Allentown to Coriano | 4,280.92 mi (6,889.48 km) |
| Allentown to Corigliano Calabro | 4,613.26 mi (7,424.32 km) |
| Allentown to Corleone | 4,538.19 mi (7,303.51 km) |
| Allentown to Cormano | 4,080.48 mi (6,566.91 km) |
| Allentown to Cornaredo | 4,076.42 mi (6,560.37 km) |
| Allentown to Cornate d'Adda | 4,089.99 mi (6,582.21 km) |
| Allentown to Cornedo Vicentino | 4,170.85 mi (6,712.33 km) |
| Allentown to Correggio | 4,175.40 mi (6,719.67 km) |
| Allentown to Corridonia | 4,345.77 mi (6,993.83 km) |
| Allentown to Corsico | 4,082.16 mi (6,569.60 km) |
