| Galway to Octeville | 406.00 mi (653.39 km) |
| Galway to Oignies | 548.20 mi (882.24 km) |
| Galway to Oissel | 514.63 mi (828.21 km) |
| Galway to Olivet | 607.60 mi (977.83 km) |
| Galway to Ollioules | 976.37 mi (1,571.31 km) |
| Galway to Olonne-sur-Mer | 566.32 mi (911.41 km) |
| Galway to Oloron-Sainte-Marie | 796.11 mi (1,281.21 km) |
| Galway to Onet Village | 809.87 mi (1,303.36 km) |
| Galway to Onnaing | 574.67 mi (924.83 km) |
| Galway to Orange | 890.13 mi (1,432.52 km) |
| Galway to Orchies | 558.01 mi (898.03 km) |
| Galway to Orleans | 606.10 mi (975.43 km) |
| Galway to Orly | 586.59 mi (944.03 km) |
| Galway to Ormesson-sur-Marne | 590.22 mi (949.87 km) |
| Galway to Orsay | 581.00 mi (935.03 km) |
