| Alcamo to Octeville | 1,081.73 mi (1,740.87 km) |
| Alcamo to Oignies | 992.26 mi (1,596.89 km) |
| Alcamo to Oissel | 981.72 mi (1,579.93 km) |
| Alcamo to Olivet | 881.28 mi (1,418.29 km) |
| Alcamo to Ollioules | 516.12 mi (830.62 km) |
| Alcamo to Olonne-sur-Mer | 955.25 mi (1,537.32 km) |
| Alcamo to Oloron-Sainte-Marie | 796.75 mi (1,282.25 km) |
| Alcamo to Onet Village | 695.96 mi (1,120.03 km) |
| Alcamo to Onnaing | 973.19 mi (1,566.20 km) |
| Alcamo to Orange | 600.80 mi (966.89 km) |
| Alcamo to Orchies | 986.58 mi (1,587.74 km) |
| Alcamo to Orleans | 882.96 mi (1,420.99 km) |
| Alcamo to Orly | 912.08 mi (1,467.85 km) |
| Alcamo to Ormesson-sur-Marne | 910.16 mi (1,464.76 km) |
| Alcamo to Orsay | 915.62 mi (1,473.54 km) |
