| Shannon to Octeville | 378.50 mi (609.13 km) |
| Shannon to Oignies | 531.57 mi (855.47 km) |
| Shannon to Oissel | 490.94 mi (790.09 km) |
| Shannon to Olivet | 580.67 mi (934.50 km) |
| Shannon to Ollioules | 946.21 mi (1,522.78 km) |
| Shannon to Olonne-sur-Mer | 531.48 mi (855.34 km) |
| Shannon to Oloron-Sainte-Marie | 759.64 mi (1,222.52 km) |
| Shannon to Onet Village | 777.67 mi (1,251.54 km) |
| Shannon to Onnaing | 558.38 mi (898.63 km) |
| Shannon to Orange | 860.11 mi (1,384.21 km) |
| Shannon to Orchies | 541.69 mi (871.76 km) |
| Shannon to Orleans | 579.29 mi (932.28 km) |
| Shannon to Orly | 562.86 mi (905.84 km) |
| Shannon to Ormesson-sur-Marne | 566.83 mi (912.22 km) |
| Shannon to Orsay | 556.83 mi (896.14 km) |
