| Willoughby to Carmona | 3,913.08 mi (6,297.49 km) |
| Willoughby to Cartagena | 4,127.64 mi (6,642.80 km) |
| Willoughby to Cartama | 3,987.10 mi (6,416.62 km) |
| Willoughby to Cartaya | 3,846.97 mi (6,191.10 km) |
| Willoughby to Caspe | 4,042.96 mi (6,506.52 km) |
| Willoughby to Cassa de la Selva | 4,149.63 mi (6,678.18 km) |
| Willoughby to Castalla | 4,106.37 mi (6,608.56 km) |
| Willoughby to Castellbisbal | 4,124.69 mi (6,638.05 km) |
| Willoughby to Castelldefels | 4,131.40 mi (6,648.84 km) |
| Willoughby to Castello de Ampurias | 4,145.39 mi (6,671.35 km) |
| Willoughby to Castellon de la Plana | 4,086.54 mi (6,576.65 km) |
| Willoughby to Castilleja de la Cuesta | 3,896.10 mi (6,270.17 km) |
| Willoughby to Catarroja | 4,090.03 mi (6,582.26 km) |
| Willoughby to Catral | 4,115.78 mi (6,623.71 km) |
| Willoughby to Caudete | 4,087.86 mi (6,578.78 km) |
