| Leighton Buzzard to Olympia Heights (Florida) | 4,409.45 mi (7,096.33 km) |
| Leighton Buzzard to Omaha (Nebraska) | 4,256.49 mi (6,850.16 km) |
| Leighton Buzzard to On Top of the World Designated Place (Florida) | 4,320.04 mi (6,952.43 km) |
| Leighton Buzzard to Onalaska (Wisconsin) | 3,953.42 mi (6,362.42 km) |
| Leighton Buzzard to Oneida (New York) | 3,395.38 mi (5,464.34 km) |
| Leighton Buzzard to Oneonta (New York) | 3,398.17 mi (5,468.82 km) |
| Leighton Buzzard to Ontario (California) | 5,384.91 mi (8,666.18 km) |
| Leighton Buzzard to Ontario (Oregon) | 4,801.05 mi (7,726.55 km) |
| Leighton Buzzard to Opa-locka (Florida) | 4,396.99 mi (7,076.27 km) |
| Leighton Buzzard to Opelika (Alabama) | 4,269.70 mi (6,871.42 km) |
| Leighton Buzzard to Opelousas (Louisiana) | 4,646.91 mi (7,478.47 km) |
| Leighton Buzzard to Orange (California) | 5,405.31 mi (8,699.00 km) |
| Leighton Buzzard to Orange (Texas) | 4,734.29 mi (7,619.11 km) |
| Leighton Buzzard to Orange City (Florida) | 4,287.08 mi (6,899.39 km) |
| Leighton Buzzard to Orangeburg (South Carolina) | 4,044.92 mi (6,509.67 km) |
