| Aachen to Popovo | 1,073.33 mi (1,727.35 km) |
| Aachen to Provadia | 1,129.24 mi (1,817.34 km) |
| Aachen to Radnevo | 1,105.08 mi (1,778.46 km) |
| Aachen to Radomir | 977.44 mi (1,573.04 km) |
| Aachen to Rakitovo | 1,046.79 mi (1,684.64 km) |
| Aachen to Rakovski | 1,067.31 mi (1,717.67 km) |
| Aachen to Razgrad | 1,077.65 mi (1,734.30 km) |
| Aachen to Razlog | 1,027.91 mi (1,654.26 km) |
| Aachen to Ruse | 1,043.13 mi (1,678.75 km) |
| Aachen to Samokov | 1,010.34 mi (1,625.98 km) |
| Aachen to Sandanski | 1,035.87 mi (1,667.08 km) |
| Aachen to Sevlievo | 1,041.34 mi (1,675.88 km) |
| Aachen to Shumen | 1,104.68 mi (1,777.82 km) |
| Aachen to Silistra | 1,086.15 mi (1,747.98 km) |
| Aachen to Sliven | 1,104.78 mi (1,777.97 km) |
