| Oak Ridge to Carrollwood (Florida) | 556.09 mi (894.93 km) |
| Oak Ridge to Carson (California) | 1,920.44 mi (3,090.65 km) |
| Oak Ridge to Carson City (Nevada) | 1,941.97 mi (3,125.30 km) |
| Oak Ridge to Carteret (New Jersey) | 631.87 mi (1,016.90 km) |
| Oak Ridge to Cartersville (Georgia) | 127.60 mi (205.35 km) |
| Oak Ridge to Carthage (Missouri) | 562.32 mi (904.97 km) |
| Oak Ridge to Cary (Illinois) | 480.92 mi (773.96 km) |
| Oak Ridge to Cary (North Carolina) | 306.71 mi (493.60 km) |
| Oak Ridge to Casa de Oro-Mount Helix (California) | 1,867.93 mi (3,006.14 km) |
| Oak Ridge to Casa Grande (Arizona) | 1,574.24 mi (2,533.49 km) |
| Oak Ridge to Casas Adobes (Arizona) | 1,543.03 mi (2,483.27 km) |
| Oak Ridge to Cascades (Virginia) | 434.17 mi (698.72 km) |
| Oak Ridge to Casper (Wyoming) | 1,263.67 mi (2,033.67 km) |
| Oak Ridge to Casselberry (Florida) | 533.42 mi (858.45 km) |
| Oak Ridge to Castaic (California) | 1,930.85 mi (3,107.41 km) |
