| Rhondda to Oschatz | 710.22 mi (1,143.00 km) |
| Rhondda to Oschersleben | 626.03 mi (1,007.50 km) |
| Rhondda to Osnabruck | 490.01 mi (788.59 km) |
| Rhondda to Ostbevern | 481.37 mi (774.69 km) |
| Rhondda to Osterburg | 646.83 mi (1,040.97 km) |
| Rhondda to Ostercappeln | 497.83 mi (801.18 km) |
| Rhondda to Osterhofen | 753.13 mi (1,212.05 km) |
| Rhondda to Osterholz-Scharmbeck | 525.91 mi (846.37 km) |
| Rhondda to Osternienburg | 659.70 mi (1,061.69 km) |
| Rhondda to Osterode | 584.93 mi (941.35 km) |
| Rhondda to Osterwieck | 603.57 mi (971.36 km) |
| Rhondda to Ostfildern | 593.95 mi (955.87 km) |
| Rhondda to Osthofen | 530.44 mi (853.67 km) |
| Rhondda to Ostrhauderfehn | 476.41 mi (766.71 km) |
| Rhondda to Ostringen | 558.27 mi (898.45 km) |
