| Aberystwyth to Nuth | 438.99 mi (706.48 km) |
| Aberystwyth to Oegstgeest | 361.31 mi (581.48 km) |
| Aberystwyth to Oirschot | 404.10 mi (650.33 km) |
| Aberystwyth to Oisterwijk | 398.67 mi (641.60 km) |
| Aberystwyth to Oldebroek | 420.14 mi (676.14 km) |
| Aberystwyth to Oldenzaal | 464.29 mi (747.21 km) |
| Aberystwyth to Ommen | 441.56 mi (710.63 km) |
| Aberystwyth to Oosterend | 426.37 mi (686.18 km) |
| Aberystwyth to Oosterhout | 383.42 mi (617.05 km) |
| Aberystwyth to Oosterwolde | 435.70 mi (701.20 km) |
| Aberystwyth to Oostzaan | 377.47 mi (607.47 km) |
| Aberystwyth to Opmeer | 379.63 mi (610.95 km) |
| Aberystwyth to Oss | 409.58 mi (659.16 km) |
| Aberystwyth to Oud-Beijerland | 361.98 mi (582.55 km) |
| Aberystwyth to Oudenbosch | 370.20 mi (595.78 km) |
