| Ostwald to Devnya | 1,019.88 mi (1,641.33 km) |
| Ostwald to Dimitrovgrad | 975.19 mi (1,569.41 km) |
| Ostwald to Dobrich | 1,020.63 mi (1,642.54 km) |
| Ostwald to Dospat | 930.53 mi (1,497.55 km) |
| Ostwald to Dupnitsa | 861.99 mi (1,387.23 km) |
| Ostwald to Elhovo | 1,012.42 mi (1,629.34 km) |
| Ostwald to Etropole | 877.29 mi (1,411.87 km) |
| Ostwald to Gabrovo | 933.58 mi (1,502.45 km) |
| Ostwald to Gorna Oryahovitsa | 940.27 mi (1,513.23 km) |
| Ostwald to Gotse Delchev | 916.05 mi (1,474.24 km) |
| Ostwald to Harmanli | 992.48 mi (1,597.24 km) |
| Ostwald to Haskovo | 978.24 mi (1,574.33 km) |
| Ostwald to Ihtiman | 884.47 mi (1,423.41 km) |
| Ostwald to Isperih | 971.32 mi (1,563.18 km) |
| Ostwald to Kardzhali | 980.84 mi (1,578.50 km) |
