| Allentown to Chivasso | 4,037.25 mi (6,497.32 km) |
| Allentown to Ciampino | 4,358.45 mi (7,014.25 km) |
| Allentown to Cicciano | 4,473.93 mi (7,200.09 km) |
| Allentown to Cingoli | 4,328.69 mi (6,966.35 km) |
| Allentown to Cinisello Balsamo | 4,082.62 mi (6,570.34 km) |
| Allentown to Cinisi | 4,515.77 mi (7,267.42 km) |
| Allentown to Cirie | 4,023.46 mi (6,475.13 km) |
| Allentown to Ciro Marina | 4,649.14 mi (7,482.07 km) |
| Allentown to Cislago | 4,068.70 mi (6,547.94 km) |
| Allentown to Cisterna di Latina | 4,376.07 mi (7,042.61 km) |
| Allentown to Cisternino | 4,609.05 mi (7,417.55 km) |
| Allentown to Citta di Castello | 4,283.50 mi (6,893.62 km) |
| Allentown to Citta Sant'Angelo | 4,395.39 mi (7,073.70 km) |
| Allentown to Cittadella | 4,187.96 mi (6,739.87 km) |
| Allentown to Cittanova | 4,642.92 mi (7,472.06 km) |
