| Swansea to Orangeburg (South Carolina) | 617.39 mi (993.59 km) |
| Swansea to Orangevale (California) | 1,677.93 mi (2,700.36 km) |
| Swansea to Orchards (Washington) | 1,725.88 mi (2,777.53 km) |
| Swansea to Orcutt (California) | 1,697.07 mi (2,731.17 km) |
| Swansea to Oregon (Ohio) | 407.12 mi (655.20 km) |
| Swansea to Oregon (Wisconsin) | 303.86 mi (489.02 km) |
| Swansea to Oregon City (Oregon) | 1,726.96 mi (2,779.27 km) |
| Swansea to Orem (Utah) | 1,162.23 mi (1,870.43 km) |
| Swansea to Orinda (California) | 1,739.26 mi (2,799.07 km) |
| Swansea to Orland Park (Illinois) | 239.18 mi (384.92 km) |
| Swansea to Orlando (Florida) | 855.00 mi (1,375.99 km) |
| Swansea to Ormond Beach (Florida) | 816.46 mi (1,313.97 km) |
| Swansea to Oro Valley (Arizona) | 1,251.14 mi (2,013.52 km) |
| Swansea to Oroville (California) | 1,687.54 mi (2,715.83 km) |
| Swansea to Oshkosh (Wisconsin) | 385.22 mi (619.95 km) |
