| Haskovo to Oestrich-Winkel | 1,007.24 mi (1,621.00 km) |
| Haskovo to Offenburg | 966.76 mi (1,555.84 km) |
| Haskovo to Oftersheim | 964.53 mi (1,552.27 km) |
| Haskovo to Ohrdruf | 933.72 mi (1,502.68 km) |
| Haskovo to Ohringen | 922.33 mi (1,484.35 km) |
| Haskovo to Olbernhau | 837.63 mi (1,348.03 km) |
| Haskovo to Olching | 817.23 mi (1,315.20 km) |
| Haskovo to Oldenburg | 1,114.81 mi (1,794.11 km) |
| Haskovo to Oldenburg in Holstein | 1,085.82 mi (1,747.46 km) |
| Haskovo to Olfen | 1,088.43 mi (1,751.65 km) |
| Haskovo to Olpe | 1,047.11 mi (1,685.16 km) |
| Haskovo to Olsberg | 1,034.89 mi (1,665.50 km) |
| Haskovo to Oranienburg | 941.82 mi (1,515.71 km) |
| Haskovo to Ortenberg | 977.94 mi (1,573.84 km) |
| Haskovo to Oschatz | 874.29 mi (1,407.03 km) |
