| Oak Ridge to Carmona | 4,220.38 mi (6,792.04 km) |
| Oak Ridge to Cartagena | 4,445.56 mi (7,154.43 km) |
| Oak Ridge to Cartama | 4,292.66 mi (6,908.37 km) |
| Oak Ridge to Cartaya | 4,150.00 mi (6,678.78 km) |
| Oak Ridge to Caspe | 4,379.62 mi (7,048.32 km) |
| Oak Ridge to Cassa de la Selva | 4,494.25 mi (7,232.79 km) |
| Oak Ridge to Castalla | 4,429.67 mi (7,128.86 km) |
| Oak Ridge to Castellbisbal | 4,466.00 mi (7,187.33 km) |
| Oak Ridge to Castelldefels | 4,471.85 mi (7,196.74 km) |
| Oak Ridge to Castello de Ampurias | 4,491.89 mi (7,228.99 km) |
| Oak Ridge to Castellon de la Plana | 4,417.53 mi (7,109.32 km) |
| Oak Ridge to Castilleja de la Cuesta | 4,202.06 mi (6,762.56 km) |
| Oak Ridge to Catarroja | 4,417.62 mi (7,109.48 km) |
| Oak Ridge to Catral | 4,436.73 mi (7,140.23 km) |
| Oak Ridge to Caudete | 4,411.02 mi (7,098.85 km) |
