| Gloucester to Carmona | 1,008.34 mi (1,622.77 km) |
| Gloucester to Cartagena | 987.48 mi (1,589.20 km) |
| Gloucester to Cartama | 1,053.45 mi (1,695.37 km) |
| Gloucester to Cartaya | 1,035.38 mi (1,666.28 km) |
| Gloucester to Caspe | 741.92 mi (1,194.01 km) |
| Gloucester to Cassa de la Selva | 729.92 mi (1,174.69 km) |
| Gloucester to Castalla | 919.84 mi (1,480.35 km) |
| Gloucester to Castellbisbal | 744.84 mi (1,198.70 km) |
| Gloucester to Castelldefels | 757.96 mi (1,219.82 km) |
| Gloucester to Castello de Ampurias | 708.89 mi (1,140.85 km) |
| Gloucester to Castellon de la Plana | 827.67 mi (1,332.00 km) |
| Gloucester to Castilleja de la Cuesta | 1,017.53 mi (1,637.56 km) |
| Gloucester to Catarroja | 865.52 mi (1,392.91 km) |
| Gloucester to Catral | 949.48 mi (1,528.04 km) |
| Gloucester to Caudete | 911.28 mi (1,466.56 km) |
