| Penarth to Nyon | 550.58 mi (886.07 km) |
| Penarth to Oberriet | 638.44 mi (1,027.47 km) |
| Penarth to Obersiggenthal | 581.52 mi (935.87 km) |
| Penarth to Oberwil | 551.57 mi (887.67 km) |
| Penarth to Oberwingert | 599.37 mi (964.59 km) |
| Penarth to Oftringen | 573.20 mi (922.47 km) |
| Penarth to Olten | 571.27 mi (919.37 km) |
| Penarth to Onex | 555.45 mi (893.91 km) |
| Penarth to Opfikon | 594.36 mi (956.53 km) |
| Penarth to Ostermundigen | 571.22 mi (919.28 km) |
| Penarth to Payerne | 556.26 mi (895.22 km) |
| Penarth to Pfaffikon | 605.39 mi (974.27 km) |
| Penarth to Plan-les-Ouates | 556.82 mi (896.12 km) |
| Penarth to Pratteln | 557.13 mi (896.61 km) |
| Penarth to Prilly | 556.67 mi (895.87 km) |
