| Olfen to Devnya | 1,105.09 mi (1,778.46 km) |
| Olfen to Dimitrovgrad | 1,084.00 mi (1,744.53 km) |
| Olfen to Dobrich | 1,100.49 mi (1,771.08 km) |
| Olfen to Dospat | 1,052.20 mi (1,693.35 km) |
| Olfen to Dupnitsa | 984.39 mi (1,584.23 km) |
| Olfen to Elhovo | 1,114.36 mi (1,793.38 km) |
| Olfen to Etropole | 987.79 mi (1,589.69 km) |
| Olfen to Gabrovo | 1,035.39 mi (1,666.30 km) |
| Olfen to Gorna Oryahovitsa | 1,036.91 mi (1,668.75 km) |
| Olfen to Gotse Delchev | 1,041.31 mi (1,675.82 km) |
| Olfen to Harmanli | 1,100.67 mi (1,771.35 km) |
| Olfen to Haskovo | 1,088.43 mi (1,751.65 km) |
| Olfen to Ihtiman | 1,000.45 mi (1,610.07 km) |
| Olfen to Isperih | 1,054.78 mi (1,697.50 km) |
| Olfen to Kardzhali | 1,095.01 mi (1,762.24 km) |
