| Rhondda to Orthez | 574.88 mi (925.17 km) |
| Rhondda to Orvault | 310.77 mi (500.14 km) |
| Rhondda to Osny | 299.22 mi (481.54 km) |
| Rhondda to Ostwald | 536.31 mi (863.10 km) |
| Rhondda to Ouistreham | 213.00 mi (342.79 km) |
| Rhondda to Oullins | 553.52 mi (890.81 km) |
| Rhondda to Outreau | 226.06 mi (363.81 km) |
| Rhondda to Oyonnax | 553.09 mi (890.12 km) |
| Rhondda to Ozoir-la-Ferriere | 333.26 mi (536.33 km) |
| Rhondda to Pace | 250.53 mi (403.19 km) |
| Rhondda to Palaiseau | 320.80 mi (516.27 km) |
| Rhondda to Pamiers | 632.27 mi (1,017.54 km) |
| Rhondda to Panazol | 453.37 mi (729.62 km) |
| Rhondda to Pantin | 318.25 mi (512.17 km) |
| Rhondda to Paray-le-Monial | 493.37 mi (794.01 km) |
