| Belfast to Oschatz | 821.71 mi (1,322.42 km) |
| Belfast to Oschersleben | 729.31 mi (1,173.70 km) |
| Belfast to Osnabruck | 596.02 mi (959.20 km) |
| Belfast to Ostbevern | 594.29 mi (956.41 km) |
| Belfast to Osterburg | 732.76 mi (1,179.26 km) |
| Belfast to Ostercappeln | 601.62 mi (968.21 km) |
| Belfast to Osterhofen | 904.87 mi (1,456.25 km) |
| Belfast to Osterholz-Scharmbeck | 605.93 mi (975.14 km) |
| Belfast to Osternienburg | 765.19 mi (1,231.46 km) |
| Belfast to Osterode | 697.22 mi (1,122.06 km) |
| Belfast to Osterwieck | 709.39 mi (1,141.65 km) |
| Belfast to Ostfildern | 763.98 mi (1,229.50 km) |
| Belfast to Osthofen | 690.64 mi (1,111.48 km) |
| Belfast to Ostrhauderfehn | 560.51 mi (902.06 km) |
| Belfast to Ostringen | 724.22 mi (1,165.52 km) |
