| Marianske Lazne to Oria | 696.20 mi (1,120.42 km) |
| Marianske Lazne to Oristano | 723.19 mi (1,163.87 km) |
| Marianske Lazne to Orta Nova | 613.87 mi (987.93 km) |
| Marianske Lazne to Orte | 518.72 mi (834.80 km) |
| Marianske Lazne to Ortona | 532.33 mi (856.70 km) |
| Marianske Lazne to Orvieto | 501.47 mi (807.03 km) |
| Marianske Lazne to Orzinuovi | 340.59 mi (548.13 km) |
| Marianske Lazne to Osimo | 449.34 mi (723.15 km) |
| Marianske Lazne to Ospitaletto | 328.15 mi (528.10 km) |
| Marianske Lazne to Ostuni | 680.08 mi (1,094.49 km) |
| Marianske Lazne to Ottaviano | 635.58 mi (1,022.87 km) |
| Marianske Lazne to Ovada | 413.96 mi (666.20 km) |
| Marianske Lazne to Ozieri | 672.34 mi (1,082.02 km) |
| Marianske Lazne to Paceco | 827.87 mi (1,332.33 km) |
| Marianske Lazne to Pachino | 923.12 mi (1,485.62 km) |
