| Friern Barnet to Odessa (Texas) | 5,001.13 mi (8,048.54 km) |
| Friern Barnet to Ogden (Utah) | 4,832.10 mi (7,776.51 km) |
| Friern Barnet to Oildale (California) | 5,380.57 mi (8,659.19 km) |
| Friern Barnet to Ojus (Florida) | 4,414.78 mi (7,104.90 km) |
| Friern Barnet to Okemos (Michigan) | 3,782.12 mi (6,086.74 km) |
| Friern Barnet to Oklahoma City (Oklahoma) | 4,632.11 mi (7,454.67 km) |
| Friern Barnet to Okmulgee (Oklahoma) | 4,567.71 mi (7,351.01 km) |
| Friern Barnet to Olathe (Kansas) | 4,358.37 mi (7,014.12 km) |
| Friern Barnet to Old Jamestown (Missouri) | 4,188.87 mi (6,741.33 km) |
| Friern Barnet to Oldsmar (Florida) | 4,414.70 mi (7,104.77 km) |
| Friern Barnet to Olean (New York) | 3,576.13 mi (5,755.22 km) |
| Friern Barnet to Olive Branch (Mississippi) | 4,362.09 mi (7,020.10 km) |
| Friern Barnet to Olivehurst (California) | 5,246.74 mi (8,443.82 km) |
| Friern Barnet to Olney (Maryland) | 3,651.69 mi (5,876.83 km) |
| Friern Barnet to Olympia (Washington) | 4,824.82 mi (7,764.80 km) |
