| Upper Grand Lagoon to Carmona | 4,486.81 mi (7,220.82 km) |
| Upper Grand Lagoon to Cartagena | 4,721.40 mi (7,598.35 km) |
| Upper Grand Lagoon to Cartama | 4,556.75 mi (7,333.38 km) |
| Upper Grand Lagoon to Cartaya | 4,412.60 mi (7,101.39 km) |
| Upper Grand Lagoon to Caspe | 4,675.67 mi (7,524.77 km) |
| Upper Grand Lagoon to Cassa de la Selva | 4,798.18 mi (7,721.92 km) |
| Upper Grand Lagoon to Castalla | 4,711.26 mi (7,582.05 km) |
| Upper Grand Lagoon to Castellbisbal | 4,766.52 mi (7,670.97 km) |
| Upper Grand Lagoon to Castelldefels | 4,771.41 mi (7,678.85 km) |
| Upper Grand Lagoon to Castello de Ampurias | 4,797.87 mi (7,721.42 km) |
| Upper Grand Lagoon to Castellon de la Plana | 4,707.32 mi (7,575.71 km) |
| Upper Grand Lagoon to Castilleja de la Cuesta | 4,467.25 mi (7,189.35 km) |
| Upper Grand Lagoon to Catarroja | 4,703.83 mi (7,570.09 km) |
| Upper Grand Lagoon to Catral | 4,715.82 mi (7,589.38 km) |
| Upper Grand Lagoon to Caudete | 4,692.60 mi (7,552.02 km) |
