| Radford to Odenton (Maryland) | 249.35 mi (401.29 km) |
| Radford to Odessa (Texas) | 1,288.99 mi (2,074.43 km) |
| Radford to Ogden (Utah) | 1,696.61 mi (2,730.43 km) |
| Radford to Oildale (California) | 2,131.46 mi (3,430.25 km) |
| Radford to Ojus (Florida) | 771.89 mi (1,242.24 km) |
| Radford to Okemos (Michigan) | 436.36 mi (702.26 km) |
| Radford to Oklahoma City (Oklahoma) | 949.79 mi (1,528.54 km) |
| Radford to Okmulgee (Oklahoma) | 864.79 mi (1,391.75 km) |
| Radford to Olathe (Kansas) | 785.07 mi (1,263.45 km) |
| Radford to Old Jamestown (Missouri) | 542.51 mi (873.08 km) |
| Radford to Oldsmar (Florida) | 638.71 mi (1,027.91 km) |
| Radford to Olean (New York) | 360.82 mi (580.68 km) |
| Radford to Olive Branch (Mississippi) | 539.72 mi (868.59 km) |
| Radford to Olivehurst (California) | 2,214.27 mi (3,563.52 km) |
| Radford to Olney (Maryland) | 235.48 mi (378.97 km) |
