| Willoughby to Cocentaina | 4,111.72 mi (6,617.17 km) |
| Willoughby to Coin | 3,982.98 mi (6,409.99 km) |
| Willoughby to Colindres | 3,818.26 mi (6,144.89 km) |
| Willoughby to Collado-Villalba | 3,882.28 mi (6,247.93 km) |
| Willoughby to Colmenar Viejo | 3,892.59 mi (6,264.51 km) |
| Willoughby to Colmenarejo | 3,884.29 mi (6,251.15 km) |
| Willoughby to Conil de la Frontera | 3,933.17 mi (6,329.82 km) |
| Willoughby to Consuegra | 3,940.17 mi (6,341.08 km) |
| Willoughby to Corbera de Llobregat | 4,124.54 mi (6,637.81 km) |
| Willoughby to Cordoba | 3,939.17 mi (6,339.49 km) |
| Willoughby to Coria del Rio | 3,899.54 mi (6,275.70 km) |
| Willoughby to Crevillente | 4,112.40 mi (6,618.28 km) |
| Willoughby to Cuarte de Huerva | 3,991.22 mi (6,423.25 km) |
| Willoughby to Cubellas | 4,120.34 mi (6,631.05 km) |
| Willoughby to Cuellar | 3,843.09 mi (6,184.86 km) |
