| Siran to Opole | 1,249.78 mi (2,011.33 km) |
| Siran to Orzesze | 1,201.49 mi (1,933.61 km) |
| Siran to Osowa | 1,369.98 mi (2,204.76 km) |
| Siran to Ostroda | 1,291.25 mi (2,078.06 km) |
| Siran to Ostroleka | 1,212.51 mi (1,951.35 km) |
| Siran to Ostrow Mazowiecka | 1,190.02 mi (1,915.16 km) |
| Siran to Ostrow Wielkopolski | 1,286.54 mi (2,070.49 km) |
| Siran to Ostrowiec Swietokrzyski | 1,128.95 mi (1,816.87 km) |
| Siran to Ostrzeszow | 1,274.27 mi (2,050.74 km) |
| Siran to Oswiecim | 1,179.38 mi (1,898.03 km) |
| Siran to Otwock | 1,181.34 mi (1,901.18 km) |
| Siran to Ozarow Mazowiecki | 1,201.31 mi (1,933.32 km) |
| Siran to Ozimek | 1,239.11 mi (1,994.16 km) |
| Siran to Ozorkow | 1,244.38 mi (2,002.63 km) |
| Siran to Pabianice | 1,228.97 mi (1,977.83 km) |
