| Echelon to Carmona | 3,648.39 mi (5,871.52 km) |
| Echelon to Cartagena | 3,872.64 mi (6,232.42 km) |
| Echelon to Cartama | 3,720.94 mi (5,988.28 km) |
| Echelon to Cartaya | 3,578.59 mi (5,759.18 km) |
| Echelon to Caspe | 3,807.07 mi (6,126.89 km) |
| Echelon to Cassa de la Selva | 3,922.78 mi (6,313.10 km) |
| Echelon to Castalla | 3,856.55 mi (6,206.52 km) |
| Echelon to Castellbisbal | 3,894.00 mi (6,266.79 km) |
| Echelon to Castelldefels | 3,899.72 mi (6,276.00 km) |
| Echelon to Castello de Ampurias | 3,920.78 mi (6,309.89 km) |
| Echelon to Castellon de la Plana | 3,844.54 mi (6,187.19 km) |
| Echelon to Castilleja de la Cuesta | 3,630.24 mi (5,842.31 km) |
| Echelon to Catarroja | 3,844.52 mi (6,187.15 km) |
| Echelon to Catral | 3,863.68 mi (6,217.98 km) |
| Echelon to Caudete | 3,837.91 mi (6,176.52 km) |
