| Kars to Popovo | 884.95 mi (1,424.18 km) |
| Kars to Provadia | 823.63 mi (1,325.50 km) |
| Kars to Radnevo | 894.85 mi (1,440.13 km) |
| Kars to Radomir | 1,047.32 mi (1,685.50 km) |
| Kars to Rakitovo | 989.47 mi (1,592.39 km) |
| Kars to Rakovski | 944.28 mi (1,519.68 km) |
| Kars to Razgrad | 872.41 mi (1,404.02 km) |
| Kars to Razlog | 1,021.30 mi (1,643.63 km) |
| Kars to Ruse | 903.06 mi (1,453.33 km) |
| Kars to Samokov | 1,016.36 mi (1,635.67 km) |
| Kars to Sandanski | 1,031.66 mi (1,660.30 km) |
| Kars to Sevlievo | 939.04 mi (1,511.23 km) |
| Kars to Shumen | 849.46 mi (1,367.07 km) |
| Kars to Silistra | 842.46 mi (1,355.82 km) |
| Kars to Sliven | 875.76 mi (1,409.40 km) |
