| Highgate to Smolyan | 1,357.08 mi (2,184.00 km) |
| Highgate to Sofia | 1,254.21 mi (2,018.45 km) |
| Highgate to Sopot | 1,313.91 mi (2,114.54 km) |
| Highgate to Sozopol | 1,444.83 mi (2,325.24 km) |
| Highgate to Sredets | 1,426.82 mi (2,296.25 km) |
| Highgate to Stamboliyski | 1,326.72 mi (2,135.15 km) |
| Highgate to Stara Zagora | 1,359.63 mi (2,188.11 km) |
| Highgate to Svilengrad | 1,409.92 mi (2,269.04 km) |
| Highgate to Svishtov | 1,300.04 mi (2,092.21 km) |
| Highgate to Targovishte | 1,365.49 mi (2,197.54 km) |
| Highgate to Teteven | 1,283.25 mi (2,065.20 km) |
| Highgate to Troyan | 1,303.00 mi (2,096.98 km) |
| Highgate to Tryavna | 1,335.81 mi (2,149.79 km) |
| Highgate to Tutrakan | 1,336.54 mi (2,150.95 km) |
| Highgate to Varna | 1,422.43 mi (2,289.18 km) |
