| Olfen to Popovo | 1,047.53 mi (1,685.83 km) |
| Olfen to Provadia | 1,101.34 mi (1,772.44 km) |
| Olfen to Radnevo | 1,084.39 mi (1,745.16 km) |
| Olfen to Radomir | 964.17 mi (1,551.68 km) |
| Olfen to Rakitovo | 1,032.49 mi (1,661.64 km) |
| Olfen to Rakovski | 1,049.25 mi (1,688.60 km) |
| Olfen to Razgrad | 1,050.39 mi (1,690.44 km) |
| Olfen to Razlog | 1,015.88 mi (1,634.90 km) |
| Olfen to Ruse | 1,015.94 mi (1,634.99 km) |
| Olfen to Samokov | 996.14 mi (1,603.13 km) |
| Olfen to Sandanski | 1,025.69 mi (1,650.69 km) |
| Olfen to Sevlievo | 1,019.77 mi (1,641.16 km) |
| Olfen to Shumen | 1,077.51 mi (1,734.09 km) |
| Olfen to Silistra | 1,054.72 mi (1,697.41 km) |
| Olfen to Sliven | 1,081.52 mi (1,740.54 km) |
