| Willoughby to Cehegin | 4,071.89 mi (6,553.08 km) |
| Willoughby to Cervello | 4,126.50 mi (6,640.95 km) |
| Willoughby to Cervera | 4,086.39 mi (6,576.41 km) |
| Willoughby to Ceuti | 4,096.93 mi (6,593.37 km) |
| Willoughby to Cheste | 4,074.47 mi (6,557.22 km) |
| Willoughby to Chiclana de la Frontera | 3,924.73 mi (6,316.24 km) |
| Willoughby to Chipiona | 3,900.15 mi (6,276.69 km) |
| Willoughby to Chiva | 4,073.14 mi (6,555.08 km) |
| Willoughby to Churriana de la Vega | 4,018.23 mi (6,466.72 km) |
| Willoughby to Ciempozuelos | 3,916.06 mi (6,302.29 km) |
| Willoughby to Cieza | 4,084.39 mi (6,573.19 km) |
| Willoughby to Cisterniga | 3,819.21 mi (6,146.43 km) |
| Willoughby to Ciudad de Melilla | 4,118.77 mi (6,628.51 km) |
| Willoughby to Ciudad Real | 3,942.02 mi (6,344.07 km) |
| Willoughby to Ciudad-Rodrigo | 3,766.41 mi (6,061.44 km) |
