| Sumner to Carmona | 5,400.74 mi (8,691.64 km) |
| Sumner to Cartagena | 5,547.59 mi (8,927.98 km) |
| Sumner to Cartama | 5,475.89 mi (8,812.60 km) |
| Sumner to Cartaya | 5,358.56 mi (8,623.76 km) |
| Sumner to Caspe | 5,374.41 mi (8,649.29 km) |
| Sumner to Cassa de la Selva | 5,424.24 mi (8,729.48 km) |
| Sumner to Castalla | 5,501.88 mi (8,854.42 km) |
| Sumner to Castellbisbal | 5,421.42 mi (8,724.94 km) |
| Sumner to Castelldefels | 5,432.40 mi (8,742.60 km) |
| Sumner to Castello de Ampurias | 5,409.07 mi (8,705.05 km) |
| Sumner to Castellon de la Plana | 5,444.36 mi (8,761.85 km) |
| Sumner to Castilleja de la Cuesta | 5,391.03 mi (8,676.03 km) |
| Sumner to Catarroja | 5,465.24 mi (8,795.45 km) |
| Sumner to Catral | 5,522.03 mi (8,886.85 km) |
| Sumner to Caudete | 5,485.77 mi (8,828.50 km) |
