| Ostrow Mazowiecka to Devnya | 711.52 mi (1,145.08 km) |
| Ostrow Mazowiecka to Dimitrovgrad | 762.36 mi (1,226.90 km) |
| Ostrow Mazowiecka to Dobrich | 693.47 mi (1,116.03 km) |
| Ostrow Mazowiecka to Dospat | 777.59 mi (1,251.42 km) |
| Ostrow Mazowiecka to Dupnitsa | 730.09 mi (1,174.96 km) |
| Ostrow Mazowiecka to Elhovo | 765.91 mi (1,232.61 km) |
| Ostrow Mazowiecka to Etropole | 695.41 mi (1,119.15 km) |
| Ostrow Mazowiecka to Gabrovo | 704.34 mi (1,133.53 km) |
| Ostrow Mazowiecka to Gorna Oryahovitsa | 690.40 mi (1,111.09 km) |
| Ostrow Mazowiecka to Gotse Delchev | 780.84 mi (1,256.64 km) |
| Ostrow Mazowiecka to Harmanli | 773.48 mi (1,244.80 km) |
| Ostrow Mazowiecka to Haskovo | 769.91 mi (1,239.05 km) |
| Ostrow Mazowiecka to Ihtiman | 721.46 mi (1,161.07 km) |
| Ostrow Mazowiecka to Isperih | 666.96 mi (1,073.38 km) |
| Ostrow Mazowiecka to Kardzhali | 787.13 mi (1,266.77 km) |
