| Williamsport to Chivasso | 4,078.66 mi (6,563.97 km) |
| Williamsport to Ciampino | 4,401.83 mi (7,084.06 km) |
| Williamsport to Cicciano | 4,517.16 mi (7,269.67 km) |
| Williamsport to Cingoli | 4,369.53 mi (7,032.08 km) |
| Williamsport to Cinisello Balsamo | 4,122.73 mi (6,634.90 km) |
| Williamsport to Cinisi | 4,563.57 mi (7,344.36 km) |
| Williamsport to Cirie | 4,064.97 mi (6,541.93 km) |
| Williamsport to Ciro Marina | 4,692.68 mi (7,552.14 km) |
| Williamsport to Cislago | 4,108.81 mi (6,612.49 km) |
| Williamsport to Cisterna di Latina | 4,419.59 mi (7,112.64 km) |
| Williamsport to Cisternino | 4,650.65 mi (7,484.49 km) |
| Williamsport to Citta di Castello | 4,324.82 mi (6,960.12 km) |
| Williamsport to Citta Sant'Angelo | 4,436.87 mi (7,140.45 km) |
| Williamsport to Cittadella | 4,226.43 mi (6,801.78 km) |
| Williamsport to Cittanova | 4,688.47 mi (7,545.36 km) |
