| Mount Washington to Carmona | 4,217.22 mi (6,786.96 km) |
| Mount Washington to Cartagena | 4,436.74 mi (7,140.25 km) |
| Mount Washington to Cartama | 4,290.51 mi (6,904.90 km) |
| Mount Washington to Cartaya | 4,149.06 mi (6,677.27 km) |
| Mount Washington to Caspe | 4,359.80 mi (7,016.42 km) |
| Mount Washington to Cassa de la Selva | 4,469.55 mi (7,193.04 km) |
| Mount Washington to Castalla | 4,417.78 mi (7,109.72 km) |
| Mount Washington to Castellbisbal | 4,443.37 mi (7,150.91 km) |
| Mount Washington to Castelldefels | 4,449.75 mi (7,161.18 km) |
| Mount Washington to Castello de Ampurias | 4,465.99 mi (7,187.31 km) |
| Mount Washington to Castellon de la Plana | 4,401.14 mi (7,082.95 km) |
| Mount Washington to Castilleja de la Cuesta | 4,199.61 mi (6,758.61 km) |
| Mount Washington to Catarroja | 4,403.23 mi (7,086.32 km) |
| Mount Washington to Catral | 4,426.19 mi (7,123.26 km) |
| Mount Washington to Caudete | 4,399.20 mi (7,079.82 km) |
