| Airdrie to Olympia Heights (Florida) | 4,243.29 mi (6,828.91 km) |
| Airdrie to Omaha (Nebraska) | 4,004.24 mi (6,444.20 km) |
| Airdrie to On Top of the World Designated Place (Florida) | 4,136.55 mi (6,657.13 km) |
| Airdrie to Onalaska (Wisconsin) | 3,703.74 mi (5,960.60 km) |
| Airdrie to Oneida (New York) | 3,181.27 mi (5,119.75 km) |
| Airdrie to Oneonta (New York) | 3,187.94 mi (5,130.50 km) |
| Airdrie to Ontario (California) | 5,107.64 mi (8,219.94 km) |
| Airdrie to Ontario (Oregon) | 4,513.08 mi (7,263.11 km) |
| Airdrie to Opa-locka (Florida) | 4,230.54 mi (6,808.40 km) |
| Airdrie to Opelika (Alabama) | 4,065.84 mi (6,543.34 km) |
| Airdrie to Opelousas (Louisiana) | 4,430.64 mi (7,130.42 km) |
| Airdrie to Orange (California) | 5,127.99 mi (8,252.70 km) |
| Airdrie to Orange (Texas) | 4,514.59 mi (7,265.53 km) |
| Airdrie to Orange City (Florida) | 4,107.32 mi (6,610.10 km) |
| Airdrie to Orangeburg (South Carolina) | 3,851.42 mi (6,198.26 km) |
