| Willoughby to Chivasso | 4,245.77 mi (6,832.91 km) |
| Willoughby to Ciampino | 4,572.07 mi (7,358.03 km) |
| Willoughby to Cicciano | 4,686.98 mi (7,542.97 km) |
| Willoughby to Cingoli | 4,535.14 mi (7,298.60 km) |
| Willoughby to Cinisello Balsamo | 4,287.38 mi (6,899.87 km) |
| Willoughby to Cinisi | 4,741.56 mi (7,630.81 km) |
| Willoughby to Cirie | 4,232.28 mi (6,811.19 km) |
| Willoughby to Ciro Marina | 4,862.83 mi (7,825.96 km) |
| Willoughby to Cislago | 4,273.47 mi (6,877.48 km) |
| Willoughby to Cisterna di Latina | 4,590.05 mi (7,386.97 km) |
| Willoughby to Cisternino | 4,817.25 mi (7,752.61 km) |
| Willoughby to Citta di Castello | 4,491.37 mi (7,228.17 km) |
| Willoughby to Citta Sant'Angelo | 4,603.56 mi (7,408.72 km) |
| Willoughby to Cittadella | 4,387.83 mi (7,061.53 km) |
| Willoughby to Cittanova | 4,862.26 mi (7,825.05 km) |
