| Grottaferrata to Orzesze | 646.77 mi (1,040.87 km) |
| Grottaferrata to Osowa | 912.56 mi (1,468.62 km) |
| Grottaferrata to Ostroda | 888.95 mi (1,430.62 km) |
| Grottaferrata to Ostroleka | 881.69 mi (1,418.95 km) |
| Grottaferrata to Ostrow Mazowiecka | 873.53 mi (1,405.81 km) |
| Grottaferrata to Ostrow Wielkopolski | 723.15 mi (1,163.79 km) |
| Grottaferrata to Ostrowiec Swietokrzyski | 755.44 mi (1,215.77 km) |
| Grottaferrata to Ostrzeszow | 710.13 mi (1,142.85 km) |
| Grottaferrata to Oswiecim | 650.59 mi (1,047.02 km) |
| Grottaferrata to Otwock | 819.41 mi (1,318.72 km) |
| Grottaferrata to Ozarow Mazowiecki | 814.81 mi (1,311.31 km) |
| Grottaferrata to Ozimek | 668.11 mi (1,075.22 km) |
| Grottaferrata to Ozorkow | 768.69 mi (1,237.09 km) |
| Grottaferrata to Pabianice | 751.13 mi (1,208.82 km) |
| Grottaferrata to Parczew | 832.55 mi (1,339.87 km) |
