| Oswestry to Olympia Heights (Florida) | 4,300.60 mi (6,921.15 km) |
| Oswestry to Omaha (Nebraska) | 4,136.49 mi (6,657.03 km) |
| Oswestry to On Top of the World Designated Place (Florida) | 4,207.90 mi (6,771.96 km) |
| Oswestry to Onalaska (Wisconsin) | 3,833.49 mi (6,169.40 km) |
| Oswestry to Oneida (New York) | 3,278.31 mi (5,275.94 km) |
| Oswestry to Oneonta (New York) | 3,281.59 mi (5,281.21 km) |
| Oswestry to Ontario (California) | 5,265.76 mi (8,474.42 km) |
| Oswestry to Ontario (Oregon) | 4,683.94 mi (7,538.07 km) |
| Oswestry to Opa-locka (Florida) | 4,288.08 mi (6,900.99 km) |
| Oswestry to Opelika (Alabama) | 4,154.25 mi (6,685.62 km) |
| Oswestry to Opelousas (Louisiana) | 4,529.86 mi (7,290.11 km) |
| Oswestry to Orange (California) | 5,286.16 mi (8,507.26 km) |
| Oswestry to Orange (Texas) | 4,616.85 mi (7,430.10 km) |
| Oswestry to Orange City (Florida) | 4,175.60 mi (6,719.97 km) |
| Oswestry to Orangeburg (South Carolina) | 3,930.99 mi (6,326.32 km) |
