| Alella to Octeville | 593.05 mi (954.43 km) |
| Alella to Oignies | 620.93 mi (999.30 km) |
| Alella to Oissel | 545.26 mi (877.52 km) |
| Alella to Olivet | 440.45 mi (708.84 km) |
| Alella to Ollioules | 214.02 mi (344.44 km) |
| Alella to Olonne-sur-Mer | 402.57 mi (647.88 km) |
| Alella to Oloron-Sainte-Marie | 189.05 mi (304.25 km) |
| Alella to Onet Village | 198.89 mi (320.08 km) |
| Alella to Onnaing | 617.56 mi (993.87 km) |
| Alella to Orange | 222.64 mi (358.31 km) |
| Alella to Orchies | 622.07 mi (1,001.13 km) |
| Alella to Orleans | 443.10 mi (713.10 km) |
| Alella to Orly | 500.85 mi (806.04 km) |
| Alella to Ormesson-sur-Marne | 503.86 mi (810.89 km) |
| Alella to Orsay | 497.69 mi (800.96 km) |
