| Partick to Olympia Heights (Florida) | 4,230.38 mi (6,808.14 km) |
| Partick to Omaha (Nebraska) | 3,992.49 mi (6,425.29 km) |
| Partick to On Top of the World Designated Place (Florida) | 4,123.69 mi (6,636.44 km) |
| Partick to Onalaska (Wisconsin) | 3,691.90 mi (5,941.54 km) |
| Partick to Oneida (New York) | 3,168.66 mi (5,099.46 km) |
| Partick to Oneonta (New York) | 3,175.29 mi (5,110.13 km) |
| Partick to Ontario (California) | 5,097.01 mi (8,202.85 km) |
| Partick to Ontario (Oregon) | 4,503.21 mi (7,247.22 km) |
| Partick to Opa-locka (Florida) | 4,217.64 mi (6,787.63 km) |
| Partick to Opelika (Alabama) | 4,053.14 mi (6,522.89 km) |
| Partick to Opelousas (Louisiana) | 4,418.10 mi (7,110.24 km) |
| Partick to Orange (California) | 5,117.37 mi (8,235.61 km) |
| Partick to Orange (Texas) | 4,502.10 mi (7,245.43 km) |
| Partick to Orange City (Florida) | 4,094.45 mi (6,589.38 km) |
| Partick to Orangeburg (South Carolina) | 3,838.62 mi (6,177.66 km) |
