| Marl to Smolyan | 1,082.03 mi (1,741.36 km) |
| Marl to Sofia | 977.81 mi (1,573.63 km) |
| Marl to Sopot | 1,032.06 mi (1,660.95 km) |
| Marl to Sozopol | 1,154.65 mi (1,858.22 km) |
| Marl to Sredets | 1,138.41 mi (1,832.10 km) |
| Marl to Stamboliyski | 1,048.93 mi (1,688.09 km) |
| Marl to Stara Zagora | 1,075.80 mi (1,731.33 km) |
| Marl to Svilengrad | 1,127.90 mi (1,815.18 km) |
| Marl to Svishtov | 1,010.47 mi (1,626.19 km) |
| Marl to Targovishte | 1,074.28 mi (1,728.88 km) |
| Marl to Teteven | 1,001.58 mi (1,611.89 km) |
| Marl to Troyan | 1,019.85 mi (1,641.30 km) |
| Marl to Tryavna | 1,050.01 mi (1,689.83 km) |
| Marl to Tutrakan | 1,041.26 mi (1,675.74 km) |
| Marl to Varna | 1,127.91 mi (1,815.20 km) |
