| Rhondda to Nowy Dwor Mazowiecki | 1,022.83 mi (1,646.08 km) |
| Rhondda to Nowy Sacz | 1,061.10 mi (1,707.68 km) |
| Rhondda to Nowy Targ | 1,035.08 mi (1,665.81 km) |
| Rhondda to Nowy Tomysl | 831.15 mi (1,337.60 km) |
| Rhondda to Nysa | 901.86 mi (1,451.40 km) |
| Rhondda to Oborniki | 858.29 mi (1,381.28 km) |
| Rhondda to Oborniki Slaskie | 872.23 mi (1,403.73 km) |
| Rhondda to Olawa | 893.73 mi (1,438.31 km) |
| Rhondda to Olecko | 1,088.56 mi (1,751.87 km) |
| Rhondda to Olesnica | 893.91 mi (1,438.61 km) |
| Rhondda to Olesno | 942.22 mi (1,516.36 km) |
| Rhondda to Olkusz | 1,000.49 mi (1,610.14 km) |
| Rhondda to Olsztyn | 1,006.79 mi (1,620.26 km) |
| Rhondda to Opalenica | 843.00 mi (1,356.67 km) |
| Rhondda to Opoczno | 1,015.29 mi (1,633.96 km) |
