| Sankt Augustin to Olympia Heights (Florida) | 4,757.08 mi (7,655.78 km) |
| Sankt Augustin to Omaha (Nebraska) | 4,580.70 mi (7,371.93 km) |
| Sankt Augustin to On Top of the World Designated Place (Florida) | 4,667.28 mi (7,511.27 km) |
| Sankt Augustin to Onalaska (Wisconsin) | 4,279.32 mi (6,886.90 km) |
| Sankt Augustin to Oneida (New York) | 3,737.07 mi (6,014.23 km) |
| Sankt Augustin to Oneonta (New York) | 3,740.89 mi (6,020.38 km) |
| Sankt Augustin to Ontario (California) | 5,684.10 mi (9,147.67 km) |
| Sankt Augustin to Ontario (Oregon) | 5,082.60 mi (8,179.65 km) |
| Sankt Augustin to Opa-locka (Florida) | 4,744.62 mi (7,635.74 km) |
| Sankt Augustin to Opelika (Alabama) | 4,614.23 mi (7,425.89 km) |
| Sankt Augustin to Opelousas (Louisiana) | 4,988.53 mi (8,028.26 km) |
| Sankt Augustin to Orange (California) | 5,704.43 mi (9,180.39 km) |
| Sankt Augustin to Orange (Texas) | 5,074.88 mi (8,167.24 km) |
| Sankt Augustin to Orange City (Florida) | 4,634.54 mi (7,458.57 km) |
| Sankt Augustin to Orangeburg (South Carolina) | 4,391.09 mi (7,066.78 km) |
