| Willoughby to Collegno | 4,236.83 mi (6,818.52 km) |
| Willoughby to Cologno al Serio | 4,305.90 mi (6,929.67 km) |
| Willoughby to Cologno Monzese | 4,290.69 mi (6,905.20 km) |
| Willoughby to Colorno | 4,358.15 mi (7,013.77 km) |
| Willoughby to Comacchio | 4,440.55 mi (7,146.37 km) |
| Willoughby to Comiso | 4,857.88 mi (7,818.00 km) |
| Willoughby to Como | 4,272.47 mi (6,875.88 km) |
| Willoughby to Concordia Sagittaria | 4,426.12 mi (7,123.16 km) |
| Willoughby to Concorezzo | 4,290.79 mi (6,905.36 km) |
| Willoughby to Conegliano | 4,399.41 mi (7,080.16 km) |
| Willoughby to Conselice | 4,433.38 mi (7,134.84 km) |
| Willoughby to Conselve | 4,407.14 mi (7,092.61 km) |
| Willoughby to Conversano | 4,794.28 mi (7,715.65 km) |
| Willoughby to Copertino | 4,862.65 mi (7,825.68 km) |
| Willoughby to Copparo | 4,418.60 mi (7,111.04 km) |
