| Olpe to Devnya | 1,068.08 mi (1,718.90 km) |
| Olpe to Dimitrovgrad | 1,042.90 mi (1,678.38 km) |
| Olpe to Dobrich | 1,064.43 mi (1,713.04 km) |
| Olpe to Dospat | 1,008.98 mi (1,623.79 km) |
| Olpe to Dupnitsa | 940.89 mi (1,514.22 km) |
| Olpe to Elhovo | 1,074.47 mi (1,729.19 km) |
| Olpe to Etropole | 946.16 mi (1,522.69 km) |
| Olpe to Gabrovo | 995.32 mi (1,601.81 km) |
| Olpe to Gorna Oryahovitsa | 997.72 mi (1,605.67 km) |
| Olpe to Gotse Delchev | 997.51 mi (1,605.34 km) |
| Olpe to Harmanli | 1,059.70 mi (1,705.43 km) |
| Olpe to Haskovo | 1,047.11 mi (1,685.16 km) |
| Olpe to Ihtiman | 957.99 mi (1,541.73 km) |
| Olpe to Isperih | 1,017.94 mi (1,638.21 km) |
| Olpe to Kardzhali | 1,053.06 mi (1,694.73 km) |
