| Aberystwyth to Oberkirch | 597.31 mi (961.29 km) |
| Aberystwyth to Obernburg am Main | 599.31 mi (964.50 km) |
| Aberystwyth to Obernkirchen | 556.49 mi (895.59 km) |
| Aberystwyth to Oberschleissheim | 745.78 mi (1,200.22 km) |
| Aberystwyth to Oberstdorf | 724.70 mi (1,166.29 km) |
| Aberystwyth to Obertraubling | 748.13 mi (1,204.00 km) |
| Aberystwyth to Obertshausen | 580.79 mi (934.69 km) |
| Aberystwyth to Oberursel | 566.82 mi (912.20 km) |
| Aberystwyth to Ochsenfurt | 642.50 mi (1,034.01 km) |
| Aberystwyth to Ochsenhausen | 687.14 mi (1,105.85 km) |
| Aberystwyth to Ochtrup | 475.87 mi (765.84 km) |
| Aberystwyth to Odenthal | 488.14 mi (785.58 km) |
| Aberystwyth to Oelde | 519.77 mi (836.49 km) |
| Aberystwyth to Oelsnitz | 712.00 mi (1,145.85 km) |
| Aberystwyth to Oer-Erkenschwick | 484.17 mi (779.19 km) |
