| Oskarshamn to Olympia Heights (Florida) | 4,980.97 mi (8,016.09 km) |
| Oskarshamn to Omaha (Nebraska) | 4,592.77 mi (7,391.36 km) |
| Oskarshamn to On Top of the World Designated Place (Florida) | 4,855.95 mi (7,814.90 km) |
| Oskarshamn to Onalaska (Wisconsin) | 4,304.07 mi (6,926.73 km) |
| Oskarshamn to Oneida (New York) | 3,865.60 mi (6,221.09 km) |
| Oskarshamn to Oneonta (New York) | 3,878.51 mi (6,241.85 km) |
| Oskarshamn to Ontario (California) | 5,585.20 mi (8,988.51 km) |
| Oskarshamn to Ontario (Oregon) | 4,940.08 mi (7,950.28 km) |
| Oskarshamn to Opa-locka (Florida) | 4,968.01 mi (7,995.23 km) |
| Oskarshamn to Opelika (Alabama) | 4,757.74 mi (7,656.84 km) |
| Oskarshamn to Opelousas (Louisiana) | 5,098.21 mi (8,204.78 km) |
| Oskarshamn to Orange (California) | 5,605.01 mi (9,020.39 km) |
| Oskarshamn to Orange (Texas) | 5,174.86 mi (8,328.13 km) |
| Oskarshamn to Orange City (Florida) | 4,831.33 mi (7,775.28 km) |
| Oskarshamn to Orangeburg (South Carolina) | 4,560.08 mi (7,338.73 km) |
