| Trecastagni to Orzesze | 884.72 mi (1,423.82 km) |
| Trecastagni to Osowa | 1,172.46 mi (1,886.90 km) |
| Trecastagni to Ostroda | 1,135.32 mi (1,827.12 km) |
| Trecastagni to Ostroleka | 1,111.83 mi (1,789.32 km) |
| Trecastagni to Ostrow Mazowiecka | 1,099.07 mi (1,768.79 km) |
| Trecastagni to Ostrow Wielkopolski | 978.65 mi (1,574.99 km) |
| Trecastagni to Ostrowiec Swietokrzyski | 970.81 mi (1,562.36 km) |
| Trecastagni to Ostrzeszow | 963.58 mi (1,550.73 km) |
| Trecastagni to Oswiecim | 882.31 mi (1,419.95 km) |
| Trecastagni to Otwock | 1,045.66 mi (1,682.82 km) |
| Trecastagni to Ozarow Mazowiecki | 1,046.00 mi (1,683.37 km) |
| Trecastagni to Ozimek | 915.14 mi (1,472.77 km) |
| Trecastagni to Ozorkow | 1,012.21 mi (1,629.00 km) |
| Trecastagni to Pabianice | 991.94 mi (1,596.37 km) |
| Trecastagni to Parczew | 1,039.91 mi (1,673.57 km) |
