| Alfter to Octeville | 390.17 mi (627.91 km) |
| Alfter to Oignies | 177.03 mi (284.91 km) |
| Alfter to Oissel | 279.61 mi (449.99 km) |
| Alfter to Olivet | 303.76 mi (488.86 km) |
| Alfter to Ollioules | 527.68 mi (849.23 km) |
| Alfter to Olonne-sur-Mer | 494.42 mi (795.69 km) |
| Alfter to Oloron-Sainte-Marie | 632.09 mi (1,017.25 km) |
| Alfter to Onet Village | 485.69 mi (781.65 km) |
| Alfter to Onnaing | 151.62 mi (244.01 km) |
| Alfter to Orange | 467.22 mi (751.91 km) |
| Alfter to Orchies | 166.06 mi (267.25 km) |
| Alfter to Orleans | 301.67 mi (485.50 km) |
| Alfter to Orly | 247.78 mi (398.76 km) |
| Alfter to Ormesson-sur-Marne | 240.70 mi (387.37 km) |
| Alfter to Orsay | 257.24 mi (414.00 km) |
