| Kerpen to Popovo | 1,050.86 mi (1,691.19 km) |
| Kerpen to Provadia | 1,106.39 mi (1,780.57 km) |
| Kerpen to Radnevo | 1,083.65 mi (1,743.97 km) |
| Kerpen to Radomir | 957.55 mi (1,541.02 km) |
| Kerpen to Rakitovo | 1,026.71 mi (1,652.33 km) |
| Kerpen to Rakovski | 1,046.42 mi (1,684.05 km) |
| Kerpen to Razgrad | 1,054.90 mi (1,697.70 km) |
| Kerpen to Razlog | 1,008.33 mi (1,622.75 km) |
| Kerpen to Ruse | 1,020.38 mi (1,642.14 km) |
| Kerpen to Samokov | 990.26 mi (1,593.67 km) |
| Kerpen to Sandanski | 1,016.73 mi (1,636.26 km) |
| Kerpen to Sevlievo | 1,019.70 mi (1,641.05 km) |
| Kerpen to Shumen | 1,081.96 mi (1,741.25 km) |
| Kerpen to Silistra | 1,062.63 mi (1,710.14 km) |
| Kerpen to Sliven | 1,082.83 mi (1,742.64 km) |
