| Oak Ridge to Cadiz | 4,214.43 mi (6,782.47 km) |
| Oak Ridge to Calafell | 4,455.39 mi (7,170.26 km) |
| Oak Ridge to Calahorra | 4,258.17 mi (6,852.87 km) |
| Oak Ridge to Calasparra | 4,391.05 mi (7,066.71 km) |
| Oak Ridge to Calatayud | 4,301.09 mi (6,921.94 km) |
| Oak Ridge to Caldas de Montbuy | 4,469.72 mi (7,193.32 km) |
| Oak Ridge to Caldas de Reyes | 3,935.98 mi (6,334.35 km) |
| Oak Ridge to Calella | 4,493.12 mi (7,230.97 km) |
| Oak Ridge to Callosa de Segura | 4,434.25 mi (7,136.24 km) |
| Oak Ridge to Calpe | 4,462.63 mi (7,181.90 km) |
| Oak Ridge to Calvia | 4,550.74 mi (7,323.71 km) |
| Oak Ridge to Camas | 4,202.36 mi (6,763.04 km) |
| Oak Ridge to Cambados | 3,930.79 mi (6,326.00 km) |
| Oak Ridge to Cambre | 3,933.91 mi (6,331.02 km) |
| Oak Ridge to Cambrils | 4,435.60 mi (7,138.41 km) |
