| Blackburn to Odessa (Texas) | 4,845.47 mi (7,798.04 km) |
| Blackburn to Ogden (Utah) | 4,661.92 mi (7,502.64 km) |
| Blackburn to Oildale (California) | 5,209.43 mi (8,383.76 km) |
| Blackburn to Ojus (Florida) | 4,297.45 mi (6,916.08 km) |
| Blackburn to Okemos (Michigan) | 3,631.52 mi (5,844.37 km) |
| Blackburn to Oklahoma City (Oklahoma) | 4,477.67 mi (7,206.12 km) |
| Blackburn to Okmulgee (Oklahoma) | 4,414.64 mi (7,104.67 km) |
| Blackburn to Olathe (Kansas) | 4,202.76 mi (6,763.69 km) |
| Blackburn to Old Jamestown (Missouri) | 4,037.77 mi (6,498.17 km) |
| Blackburn to Oldsmar (Florida) | 4,289.67 mi (6,903.55 km) |
| Blackburn to Olean (New York) | 3,432.82 mi (5,524.59 km) |
| Blackburn to Olive Branch (Mississippi) | 4,216.65 mi (6,786.04 km) |
| Blackburn to Olivehurst (California) | 5,073.06 mi (8,164.30 km) |
| Blackburn to Olney (Maryland) | 3,515.37 mi (5,657.44 km) |
| Blackburn to Olympia (Washington) | 4,648.82 mi (7,481.55 km) |
