| Olpe to Popovo | 1,009.32 mi (1,624.34 km) |
| Olpe to Provadia | 1,064.13 mi (1,712.55 km) |
| Olpe to Radnevo | 1,044.03 mi (1,680.21 km) |
| Olpe to Radomir | 920.90 mi (1,482.05 km) |
| Olpe to Rakitovo | 989.65 mi (1,592.68 km) |
| Olpe to Rakovski | 1,007.82 mi (1,621.94 km) |
| Olpe to Razgrad | 1,012.84 mi (1,630.01 km) |
| Olpe to Razlog | 972.22 mi (1,564.64 km) |
| Olpe to Ruse | 978.33 mi (1,574.48 km) |
| Olpe to Samokov | 953.23 mi (1,534.07 km) |
| Olpe to Sandanski | 981.42 mi (1,579.44 km) |
| Olpe to Sevlievo | 979.73 mi (1,576.72 km) |
| Olpe to Shumen | 1,039.95 mi (1,673.63 km) |
| Olpe to Silistra | 1,019.15 mi (1,640.17 km) |
| Olpe to Sliven | 1,042.23 mi (1,677.31 km) |
