| Haapsalu to Oignies | 1,001.01 mi (1,610.96 km) |
| Haapsalu to Oissel | 1,115.98 mi (1,796.00 km) |
| Haapsalu to Olivet | 1,165.44 mi (1,875.59 km) |
| Haapsalu to Ollioules | 1,326.21 mi (2,134.33 km) |
| Haapsalu to Olonne-sur-Mer | 1,348.03 mi (2,169.45 km) |
| Haapsalu to Oloron-Sainte-Marie | 1,494.70 mi (2,405.49 km) |
| Haapsalu to Onet Village | 1,337.73 mi (2,152.87 km) |
| Haapsalu to Onnaing | 985.78 mi (1,586.47 km) |
| Haapsalu to Orange | 1,292.08 mi (2,079.40 km) |
| Haapsalu to Orchies | 992.78 mi (1,597.73 km) |
| Haapsalu to Orleans | 1,163.17 mi (1,871.94 km) |
| Haapsalu to Orly | 1,105.00 mi (1,778.33 km) |
| Haapsalu to Ormesson-sur-Marne | 1,098.39 mi (1,767.69 km) |
| Haapsalu to Orsay | 1,113.66 mi (1,792.27 km) |
| Haapsalu to Orthez | 1,482.86 mi (2,386.44 km) |
