| Philadelphia to Carmona | 3,651.24 mi (5,876.11 km) |
| Philadelphia to Cartagena | 3,875.00 mi (6,236.22 km) |
| Philadelphia to Cartama | 3,723.89 mi (5,993.02 km) |
| Philadelphia to Cartaya | 3,581.63 mi (5,764.08 km) |
| Philadelphia to Caspe | 3,808.44 mi (6,129.10 km) |
| Philadelphia to Cassa de la Selva | 3,923.72 mi (6,314.62 km) |
| Philadelphia to Castalla | 3,858.64 mi (6,209.88 km) |
| Philadelphia to Castellbisbal | 3,895.13 mi (6,268.60 km) |
| Philadelphia to Castelldefels | 3,900.90 mi (6,277.89 km) |
| Philadelphia to Castello de Ampurias | 3,921.62 mi (6,311.23 km) |
| Philadelphia to Castellon de la Plana | 3,846.22 mi (6,189.89 km) |
| Philadelphia to Castilleja de la Cuesta | 3,633.16 mi (5,847.00 km) |
| Philadelphia to Catarroja | 3,846.38 mi (6,190.15 km) |
| Philadelphia to Catral | 3,865.88 mi (6,221.54 km) |
| Philadelphia to Caudete | 3,840.00 mi (6,179.88 km) |
