| Oak Ridge to Cibolo (Texas) | 920.32 mi (1,481.11 km) |
| Oak Ridge to Cicero (Illinois) | 446.89 mi (719.21 km) |
| Oak Ridge to Cimarron Hills (Colorado) | 1,135.11 mi (1,826.78 km) |
| Oak Ridge to Cincinnati (Ohio) | 219.84 mi (353.81 km) |
| Oak Ridge to Cinco Ranch (Texas) | 791.54 mi (1,273.86 km) |
| Oak Ridge to Circleville (Ohio) | 262.39 mi (422.28 km) |
| Oak Ridge to Citrus (California) | 1,895.42 mi (3,050.39 km) |
| Oak Ridge to Citrus Heights (California) | 2,027.44 mi (3,262.85 km) |
| Oak Ridge to Citrus Park (Florida) | 554.53 mi (892.42 km) |
| Oak Ridge to Claiborne (Louisiana) | 509.48 mi (819.93 km) |
| Oak Ridge to Claremont (California) | 1,885.60 mi (3,034.58 km) |
| Oak Ridge to Claremont (New Hampshire) | 815.18 mi (1,311.91 km) |
| Oak Ridge to Claremore (Oklahoma) | 631.51 mi (1,016.31 km) |
| Oak Ridge to Clarksburg (Maryland) | 445.66 mi (717.21 km) |
| Oak Ridge to Clarksburg (West Virginia) | 316.01 mi (508.57 km) |
