| Hallein to Oignies | 495.57 mi (797.54 km) |
| Hallein to Oissel | 560.40 mi (901.88 km) |
| Hallein to Olivet | 519.08 mi (835.37 km) |
| Hallein to Ollioules | 469.83 mi (756.11 km) |
| Hallein to Olonne-sur-Mer | 701.97 mi (1,129.71 km) |
| Hallein to Oloron-Sainte-Marie | 730.85 mi (1,176.19 km) |
| Hallein to Onet Village | 551.99 mi (888.34 km) |
| Hallein to Onnaing | 468.61 mi (754.16 km) |
| Hallein to Orange | 466.18 mi (750.25 km) |
| Hallein to Orchies | 485.30 mi (781.01 km) |
| Hallein to Orleans | 518.57 mi (834.56 km) |
| Hallein to Orly | 497.45 mi (800.56 km) |
| Hallein to Ormesson-sur-Marne | 491.09 mi (790.33 km) |
| Hallein to Orsay | 506.54 mi (815.20 km) |
| Hallein to Orthez | 728.23 mi (1,171.98 km) |
