| Omurtag to Orzesze | 607.29 mi (977.33 km) |
| Omurtag to Osowa | 860.97 mi (1,385.60 km) |
| Omurtag to Ostroda | 789.11 mi (1,269.95 km) |
| Omurtag to Ostroleka | 723.69 mi (1,164.66 km) |
| Omurtag to Ostrow Mazowiecka | 701.69 mi (1,129.26 km) |
| Omurtag to Ostrow Wielkopolski | 713.69 mi (1,148.57 km) |
| Omurtag to Ostrowiec Swietokrzyski | 590.23 mi (949.89 km) |
| Omurtag to Ostrzeszow | 697.89 mi (1,123.15 km) |
| Omurtag to Oswiecim | 588.15 mi (946.54 km) |
| Omurtag to Otwock | 667.17 mi (1,073.70 km) |
| Omurtag to Ozarow Mazowiecki | 681.48 mi (1,096.73 km) |
| Omurtag to Ozimek | 650.20 mi (1,046.40 km) |
| Omurtag to Ozorkow | 696.40 mi (1,120.74 km) |
| Omurtag to Pabianice | 675.50 mi (1,087.12 km) |
| Omurtag to Parczew | 612.36 mi (985.50 km) |
