| Galway to Oerlinghausen | 746.61 mi (1,201.56 km) |
| Galway to Oestrich-Winkel | 763.13 mi (1,228.13 km) |
| Galway to Offenburg | 808.93 mi (1,301.85 km) |
| Galway to Oftersheim | 805.21 mi (1,295.85 km) |
| Galway to Ohrdruf | 854.40 mi (1,375.03 km) |
| Galway to Ohringen | 847.40 mi (1,363.77 km) |
| Galway to Olbernhau | 965.42 mi (1,553.69 km) |
| Galway to Olching | 952.92 mi (1,533.57 km) |
| Galway to Oldenburg | 712.67 mi (1,146.93 km) |
| Galway to Oldenburg in Holstein | 814.00 mi (1,310.00 km) |
| Galway to Olfen | 697.95 mi (1,123.24 km) |
| Galway to Olpe | 730.73 mi (1,176.00 km) |
| Galway to Olsberg | 750.41 mi (1,207.67 km) |
| Galway to Oranienburg | 923.32 mi (1,485.94 km) |
| Galway to Ortenberg | 796.73 mi (1,282.22 km) |
