| Ustka to Orbetello | 877.14 mi (1,411.62 km) |
| Ustka to Oria | 973.73 mi (1,567.07 km) |
| Ustka to Oristano | 1,083.80 mi (1,744.21 km) |
| Ustka to Orta Nova | 917.14 mi (1,476.00 km) |
| Ustka to Orte | 861.72 mi (1,386.81 km) |
| Ustka to Ortona | 852.52 mi (1,372.00 km) |
| Ustka to Orvieto | 847.37 mi (1,363.71 km) |
| Ustka to Orzinuovi | 704.17 mi (1,133.26 km) |
| Ustka to Osimo | 781.72 mi (1,258.05 km) |
| Ustka to Ospitaletto | 691.64 mi (1,113.09 km) |
| Ustka to Ostuni | 957.54 mi (1,541.01 km) |
| Ustka to Ottaviano | 955.12 mi (1,537.12 km) |
| Ustka to Ovada | 777.87 mi (1,251.86 km) |
| Ustka to Ozieri | 1,032.48 mi (1,661.61 km) |
| Ustka to Paceco | 1,164.63 mi (1,874.30 km) |
