| Cobh to Octeville | 328.85 mi (529.23 km) |
| Cobh to Oignies | 497.92 mi (801.32 km) |
| Cobh to Oissel | 446.34 mi (718.32 km) |
| Cobh to Olivet | 530.53 mi (853.80 km) |
| Cobh to Ollioules | 890.62 mi (1,433.31 km) |
| Cobh to Olonne-sur-Mer | 470.38 mi (757.01 km) |
| Cobh to Oloron-Sainte-Marie | 696.61 mi (1,121.09 km) |
| Cobh to Onet Village | 719.58 mi (1,158.06 km) |
| Cobh to Onnaing | 525.06 mi (845.00 km) |
| Cobh to Orange | 804.81 mi (1,295.22 km) |
| Cobh to Orchies | 508.45 mi (818.27 km) |
| Cobh to Orleans | 529.32 mi (851.86 km) |
| Cobh to Orly | 517.70 mi (833.15 km) |
| Cobh to Ormesson-sur-Marne | 522.16 mi (840.34 km) |
| Cobh to Orsay | 511.03 mi (822.42 km) |
