| Williamstown to Cadiz | 3,646.32 mi (5,868.19 km) |
| Williamstown to Calafell | 3,887.60 mi (6,256.49 km) |
| Williamstown to Calahorra | 3,690.28 mi (5,938.94 km) |
| Williamstown to Calasparra | 3,821.69 mi (6,150.42 km) |
| Williamstown to Calatayud | 3,732.63 mi (6,007.08 km) |
| Williamstown to Caldas de Montbuy | 3,902.47 mi (6,280.42 km) |
| Williamstown to Caldas de Reyes | 3,367.04 mi (5,418.72 km) |
| Williamstown to Calella | 3,926.02 mi (6,318.31 km) |
| Williamstown to Callosa de Segura | 3,864.90 mi (6,219.95 km) |
| Williamstown to Calpe | 3,893.36 mi (6,265.76 km) |
| Williamstown to Calvia | 3,982.14 mi (6,408.64 km) |
| Williamstown to Camas | 3,633.65 mi (5,847.80 km) |
| Williamstown to Cambados | 3,361.78 mi (5,410.27 km) |
| Williamstown to Cambre | 3,365.38 mi (5,416.05 km) |
| Williamstown to Cambrils | 3,867.58 mi (6,224.26 km) |
