| Sion to Carmona | 900.40 mi (1,449.05 km) |
| Sion to Cartagena | 733.97 mi (1,181.22 km) |
| Sion to Cartama | 902.78 mi (1,452.88 km) |
| Sion to Cartaya | 967.99 mi (1,557.84 km) |
| Sion to Caspe | 505.39 mi (813.35 km) |
| Sion to Cassa de la Selva | 373.81 mi (601.59 km) |
| Sion to Castalla | 667.46 mi (1,074.17 km) |
| Sion to Castellbisbal | 424.03 mi (682.40 km) |
| Sion to Castelldefels | 435.07 mi (700.18 km) |
| Sion to Castello de Ampurias | 347.11 mi (558.61 km) |
| Sion to Castellon de la Plana | 570.29 mi (917.79 km) |
| Sion to Castilleja de la Cuesta | 920.40 mi (1,481.24 km) |
| Sion to Catarroja | 614.07 mi (988.24 km) |
| Sion to Catral | 696.44 mi (1,120.81 km) |
| Sion to Caudete | 671.46 mi (1,080.61 km) |
