| Marck to Oria | 1,041.61 mi (1,676.30 km) |
| Marck to Oristano | 827.30 mi (1,331.41 km) |
| Marck to Orta Nova | 932.83 mi (1,501.24 km) |
| Marck to Orte | 765.57 mi (1,232.07 km) |
| Marck to Ortona | 835.47 mi (1,344.56 km) |
| Marck to Orvieto | 742.90 mi (1,195.58 km) |
| Marck to Orzinuovi | 530.68 mi (854.04 km) |
| Marck to Osimo | 746.04 mi (1,200.63 km) |
| Marck to Ospitaletto | 527.14 mi (848.34 km) |
| Marck to Ostuni | 1,027.74 mi (1,653.99 km) |
| Marck to Ottaviano | 919.21 mi (1,479.32 km) |
| Marck to Ovada | 534.88 mi (860.81 km) |
| Marck to Ozieri | 791.75 mi (1,274.20 km) |
| Marck to Paceco | 1,034.73 mi (1,665.24 km) |
| Marck to Pachino | 1,177.78 mi (1,895.46 km) |
