| Oak Ridge to Odessa (Texas) | 1,070.91 mi (1,723.46 km) |
| Oak Ridge to Ogden (Utah) | 1,531.00 mi (2,463.91 km) |
| Oak Ridge to Oildale (California) | 1,939.08 mi (3,120.65 km) |
| Oak Ridge to Ojus (Florida) | 733.32 mi (1,180.17 km) |
| Oak Ridge to Okemos (Michigan) | 465.86 mi (749.72 km) |
| Oak Ridge to Oklahoma City (Oklahoma) | 741.83 mi (1,193.87 km) |
| Oak Ridge to Okmulgee (Oklahoma) | 656.53 mi (1,056.59 km) |
| Oak Ridge to Olathe (Kansas) | 611.35 mi (983.87 km) |
| Oak Ridge to Old Jamestown (Missouri) | 384.06 mi (618.08 km) |
| Oak Ridge to Oldsmar (Florida) | 554.95 mi (893.10 km) |
| Oak Ridge to Olean (New York) | 526.66 mi (847.58 km) |
| Oak Ridge to Olive Branch (Mississippi) | 320.05 mi (515.07 km) |
| Oak Ridge to Olivehurst (California) | 2,038.99 mi (3,281.44 km) |
| Oak Ridge to Olney (Maryland) | 452.40 mi (728.07 km) |
| Oak Ridge to Olympia (Washington) | 2,113.43 mi (3,401.24 km) |
