| Hallstadt to Octeville | 558.61 mi (899.00 km) |
| Hallstadt to Oignies | 350.72 mi (564.43 km) |
| Hallstadt to Oissel | 439.73 mi (707.68 km) |
| Hallstadt to Olivet | 432.01 mi (695.25 km) |
| Hallstadt to Ollioules | 526.63 mi (847.53 km) |
| Hallstadt to Olonne-sur-Mer | 626.98 mi (1,009.03 km) |
| Hallstadt to Oloron-Sainte-Marie | 716.04 mi (1,152.36 km) |
| Hallstadt to Onet Village | 546.85 mi (880.07 km) |
| Hallstadt to Onnaing | 323.86 mi (521.21 km) |
| Hallstadt to Orange | 491.69 mi (791.31 km) |
| Hallstadt to Orchies | 339.74 mi (546.76 km) |
| Hallstadt to Orleans | 430.63 mi (693.03 km) |
| Hallstadt to Orly | 390.75 mi (628.85 km) |
| Hallstadt to Ormesson-sur-Marne | 383.59 mi (617.34 km) |
| Hallstadt to Orsay | 400.61 mi (644.72 km) |
