| Mablethorpe to Smolyan | 1,389.80 mi (2,236.67 km) |
| Mablethorpe to Sofia | 1,285.79 mi (2,069.27 km) |
| Mablethorpe to Sopot | 1,341.42 mi (2,158.80 km) |
| Mablethorpe to Sozopol | 1,465.13 mi (2,357.89 km) |
| Mablethorpe to Sredets | 1,448.78 mi (2,331.59 km) |
| Mablethorpe to Stamboliyski | 1,357.38 mi (2,184.50 km) |
| Mablethorpe to Stara Zagora | 1,385.56 mi (2,229.84 km) |
| Mablethorpe to Svilengrad | 1,437.38 mi (2,313.24 km) |
| Mablethorpe to Svishtov | 1,320.88 mi (2,125.75 km) |
| Mablethorpe to Targovishte | 1,384.78 mi (2,228.59 km) |
| Mablethorpe to Teteven | 1,310.87 mi (2,109.63 km) |
| Mablethorpe to Troyan | 1,329.45 mi (2,139.54 km) |
| Mablethorpe to Tryavna | 1,360.05 mi (2,188.80 km) |
| Mablethorpe to Tutrakan | 1,351.64 mi (2,175.26 km) |
| Mablethorpe to Varna | 1,438.33 mi (2,314.78 km) |
