| Bacup to Olympia Heights (Florida) | 4,328.70 mi (6,966.36 km) |
| Bacup to Omaha (Nebraska) | 4,138.10 mi (6,659.63 km) |
| Bacup to On Top of the World Designated Place (Florida) | 4,231.57 mi (6,810.06 km) |
| Bacup to Onalaska (Wisconsin) | 3,836.03 mi (6,173.50 km) |
| Bacup to Oneida (New York) | 3,292.97 mi (5,299.53 km) |
| Bacup to Oneonta (New York) | 3,297.44 mi (5,306.71 km) |
| Bacup to Ontario (California) | 5,256.12 mi (8,458.91 km) |
| Bacup to Ontario (Oregon) | 4,667.76 mi (7,512.04 km) |
| Bacup to Opa-locka (Florida) | 4,316.10 mi (6,946.09 km) |
| Bacup to Opelika (Alabama) | 4,172.26 mi (6,714.61 km) |
| Bacup to Opelousas (Louisiana) | 4,544.22 mi (7,313.22 km) |
| Bacup to Orange (California) | 5,276.50 mi (8,491.71 km) |
| Bacup to Orange (Texas) | 4,630.15 mi (7,451.50 km) |
| Bacup to Orange City (Florida) | 4,200.24 mi (6,759.63 km) |
| Bacup to Orangeburg (South Carolina) | 3,951.89 mi (6,359.95 km) |
