| Swansea to Nyon | 4,620.61 mi (7,436.15 km) |
| Swansea to Oberriet | 4,717.39 mi (7,591.91 km) |
| Swansea to Obersiggenthal | 4,661.19 mi (7,501.46 km) |
| Swansea to Oberwil | 4,631.28 mi (7,453.32 km) |
| Swansea to Oberwingert | 4,678.67 mi (7,529.60 km) |
| Swansea to Oftringen | 4,652.87 mi (7,488.07 km) |
| Swansea to Olten | 4,650.96 mi (7,485.00 km) |
| Swansea to Onex | 4,622.61 mi (7,439.36 km) |
| Swansea to Opfikon | 4,673.95 mi (7,522.00 km) |
| Swansea to Ostermundigen | 4,649.56 mi (7,482.75 km) |
| Swansea to Payerne | 4,632.61 mi (7,455.47 km) |
| Swansea to Pfaffikon | 4,684.94 mi (7,539.69 km) |
| Swansea to Plan-les-Ouates | 4,623.89 mi (7,441.44 km) |
| Swansea to Pratteln | 4,636.87 mi (7,462.32 km) |
| Swansea to Prilly | 4,629.80 mi (7,450.94 km) |
