| Ahlen to Popovo | 1,029.54 mi (1,656.89 km) |
| Ahlen to Provadia | 1,083.00 mi (1,742.92 km) |
| Ahlen to Radnevo | 1,067.21 mi (1,717.51 km) |
| Ahlen to Radomir | 948.37 mi (1,526.26 km) |
| Ahlen to Rakitovo | 1,016.46 mi (1,635.83 km) |
| Ahlen to Rakovski | 1,032.54 mi (1,661.71 km) |
| Ahlen to Razgrad | 1,032.18 mi (1,661.13 km) |
| Ahlen to Razlog | 1,000.27 mi (1,609.77 km) |
| Ahlen to Ruse | 997.75 mi (1,605.73 km) |
| Ahlen to Samokov | 980.15 mi (1,577.39 km) |
| Ahlen to Sandanski | 1,010.42 mi (1,626.11 km) |
| Ahlen to Sevlievo | 1,002.48 mi (1,613.34 km) |
| Ahlen to Shumen | 1,059.30 mi (1,704.78 km) |
| Ahlen to Silistra | 1,035.88 mi (1,667.09 km) |
| Ahlen to Sliven | 1,063.92 mi (1,712.21 km) |
