| Ferentino to Orzesze | 641.52 mi (1,032.43 km) |
| Ferentino to Osowa | 912.30 mi (1,468.20 km) |
| Ferentino to Ostroda | 886.12 mi (1,426.08 km) |
| Ferentino to Ostroleka | 876.14 mi (1,410.01 km) |
| Ferentino to Ostrow Mazowiecka | 867.23 mi (1,395.68 km) |
| Ferentino to Ostrow Wielkopolski | 721.46 mi (1,161.08 km) |
| Ferentino to Ostrowiec Swietokrzyski | 747.15 mi (1,202.42 km) |
| Ferentino to Ostrzeszow | 708.00 mi (1,139.41 km) |
| Ferentino to Oswiecim | 644.31 mi (1,036.92 km) |
| Ferentino to Otwock | 813.03 mi (1,308.45 km) |
| Ferentino to Ozarow Mazowiecki | 809.19 mi (1,302.27 km) |
| Ferentino to Ozimek | 664.59 mi (1,069.55 km) |
| Ferentino to Ozorkow | 764.97 mi (1,231.10 km) |
| Ferentino to Pabianice | 746.87 mi (1,201.96 km) |
| Ferentino to Parczew | 823.44 mi (1,325.20 km) |
