| Montabaur to Popovo | 993.69 mi (1,599.20 km) |
| Montabaur to Provadia | 1,049.48 mi (1,688.97 km) |
| Montabaur to Radnevo | 1,026.03 mi (1,651.23 km) |
| Montabaur to Radomir | 899.67 mi (1,447.88 km) |
| Montabaur to Rakitovo | 968.84 mi (1,559.19 km) |
| Montabaur to Rakovski | 988.65 mi (1,591.08 km) |
| Montabaur to Razgrad | 997.91 mi (1,605.99 km) |
| Montabaur to Razlog | 950.46 mi (1,529.62 km) |
| Montabaur to Ruse | 963.39 mi (1,550.43 km) |
| Montabaur to Samokov | 932.39 mi (1,500.53 km) |
| Montabaur to Sandanski | 958.89 mi (1,543.18 km) |
| Montabaur to Sevlievo | 962.14 mi (1,548.42 km) |
| Montabaur to Shumen | 1,024.96 mi (1,649.51 km) |
| Montabaur to Silistra | 1,006.27 mi (1,619.43 km) |
| Montabaur to Sliven | 1,025.40 mi (1,650.22 km) |
