| Marl to Popovo | 1,056.31 mi (1,699.97 km) |
| Marl to Provadia | 1,110.35 mi (1,786.93 km) |
| Marl to Radnevo | 1,092.67 mi (1,758.48 km) |
| Marl to Radomir | 971.61 mi (1,563.66 km) |
| Marl to Rakitovo | 1,040.07 mi (1,673.84 km) |
| Marl to Rakovski | 1,057.24 mi (1,701.46 km) |
| Marl to Razgrad | 1,059.32 mi (1,704.81 km) |
| Marl to Razlog | 1,023.20 mi (1,646.69 km) |
| Marl to Ruse | 1,024.85 mi (1,649.34 km) |
| Marl to Samokov | 1,003.69 mi (1,615.29 km) |
| Marl to Sandanski | 1,032.81 mi (1,662.15 km) |
| Marl to Sevlievo | 1,028.12 mi (1,654.60 km) |
| Marl to Shumen | 1,086.44 mi (1,748.46 km) |
| Marl to Silistra | 1,064.05 mi (1,712.43 km) |
| Marl to Sliven | 1,090.06 mi (1,754.28 km) |
