| Caerfyrddin to Oschatz | 747.31 mi (1,202.68 km) |
| Caerfyrddin to Oschersleben | 661.91 mi (1,065.25 km) |
| Caerfyrddin to Osnabruck | 525.39 mi (845.54 km) |
| Caerfyrddin to Ostbevern | 517.50 mi (832.83 km) |
| Caerfyrddin to Osterburg | 680.81 mi (1,095.66 km) |
| Caerfyrddin to Ostercappeln | 533.01 mi (857.80 km) |
| Caerfyrddin to Osterhofen | 793.71 mi (1,277.35 km) |
| Caerfyrddin to Osterholz-Scharmbeck | 558.35 mi (898.58 km) |
| Caerfyrddin to Osternienburg | 695.98 mi (1,120.06 km) |
| Caerfyrddin to Osterode | 621.60 mi (1,000.37 km) |
| Caerfyrddin to Osterwieck | 639.63 mi (1,029.39 km) |
| Caerfyrddin to Ostfildern | 635.33 mi (1,022.46 km) |
| Caerfyrddin to Osthofen | 571.17 mi (919.22 km) |
| Caerfyrddin to Ostrhauderfehn | 508.94 mi (819.06 km) |
| Caerfyrddin to Ostringen | 599.40 mi (964.64 km) |
