| Smolyan to Orzesze | 656.98 mi (1,057.30 km) |
| Smolyan to Osowa | 932.08 mi (1,500.03 km) |
| Smolyan to Ostroda | 865.20 mi (1,392.41 km) |
| Smolyan to Ostroleka | 806.68 mi (1,298.22 km) |
| Smolyan to Ostrow Mazowiecka | 785.91 mi (1,264.80 km) |
| Smolyan to Ostrow Wielkopolski | 767.58 mi (1,235.30 km) |
| Smolyan to Ostrowiec Swietokrzyski | 664.80 mi (1,069.89 km) |
| Smolyan to Ostrzeszow | 751.01 mi (1,208.64 km) |
| Smolyan to Oswiecim | 640.56 mi (1,030.88 km) |
| Smolyan to Otwock | 745.43 mi (1,199.65 km) |
| Smolyan to Ozarow Mazowiecki | 757.13 mi (1,218.48 km) |
| Smolyan to Ozimek | 700.01 mi (1,126.56 km) |
| Smolyan to Ozorkow | 761.30 mi (1,225.19 km) |
| Smolyan to Pabianice | 739.40 mi (1,189.94 km) |
| Smolyan to Parczew | 699.76 mi (1,126.15 km) |
