| Penarth to Orthez | 559.98 mi (901.20 km) |
| Penarth to Orvault | 295.61 mi (475.75 km) |
| Penarth to Osny | 283.24 mi (455.83 km) |
| Penarth to Ostwald | 522.14 mi (840.30 km) |
| Penarth to Ouistreham | 196.33 mi (315.97 km) |
| Penarth to Oullins | 536.94 mi (864.12 km) |
| Penarth to Outreau | 212.80 mi (342.47 km) |
| Penarth to Oyonnax | 536.78 mi (863.86 km) |
| Penarth to Ozoir-la-Ferriere | 317.31 mi (510.67 km) |
| Penarth to Pace | 235.16 mi (378.46 km) |
| Penarth to Palaiseau | 304.63 mi (490.25 km) |
| Penarth to Pamiers | 616.25 mi (991.76 km) |
| Penarth to Panazol | 436.93 mi (703.17 km) |
| Penarth to Pantin | 302.28 mi (486.48 km) |
| Penarth to Paray-le-Monial | 476.82 mi (767.37 km) |
