| Haapsalu to Oria | 1,299.86 mi (2,091.93 km) |
| Haapsalu to Oristano | 1,469.06 mi (2,364.22 km) |
| Haapsalu to Orta Nova | 1,263.04 mi (2,032.67 km) |
| Haapsalu to Orte | 1,234.99 mi (1,987.53 km) |
| Haapsalu to Ortona | 1,211.55 mi (1,949.80 km) |
| Haapsalu to Orvieto | 1,222.81 mi (1,967.92 km) |
| Haapsalu to Orzinuovi | 1,094.26 mi (1,761.03 km) |
| Haapsalu to Osimo | 1,150.28 mi (1,851.19 km) |
| Haapsalu to Ospitaletto | 1,081.63 mi (1,740.71 km) |
| Haapsalu to Ostuni | 1,284.40 mi (2,067.05 km) |
| Haapsalu to Ottaviano | 1,310.56 mi (2,109.14 km) |
| Haapsalu to Ovada | 1,169.49 mi (1,882.12 km) |
| Haapsalu to Ozieri | 1,417.44 mi (2,281.15 km) |
| Haapsalu to Paceco | 1,528.36 mi (2,459.66 km) |
| Haapsalu to Pachino | 1,581.67 mi (2,545.45 km) |
