| Marlow to Smolyan | 1,382.62 mi (2,225.11 km) |
| Marlow to Sofia | 1,279.87 mi (2,059.76 km) |
| Marlow to Sopot | 1,339.86 mi (2,156.30 km) |
| Marlow to Sozopol | 1,471.21 mi (2,367.68 km) |
| Marlow to Sredets | 1,453.10 mi (2,338.54 km) |
| Marlow to Stamboliyski | 1,352.43 mi (2,176.53 km) |
| Marlow to Stara Zagora | 1,385.67 mi (2,230.02 km) |
| Marlow to Svilengrad | 1,435.84 mi (2,310.76 km) |
| Marlow to Svishtov | 1,326.42 mi (2,134.66 km) |
| Marlow to Targovishte | 1,391.93 mi (2,240.10 km) |
| Marlow to Teteven | 1,309.20 mi (2,106.96 km) |
| Marlow to Troyan | 1,329.03 mi (2,138.87 km) |
| Marlow to Tryavna | 1,361.98 mi (2,191.89 km) |
| Marlow to Tutrakan | 1,363.21 mi (2,193.87 km) |
| Marlow to Varna | 1,449.04 mi (2,332.00 km) |
