| Hilsea to Smolyan | 1,378.08 mi (2,217.81 km) |
| Hilsea to Sofia | 1,276.15 mi (2,053.76 km) |
| Hilsea to Sopot | 1,337.73 mi (2,152.87 km) |
| Hilsea to Sozopol | 1,471.84 mi (2,368.69 km) |
| Hilsea to Sredets | 1,453.06 mi (2,338.47 km) |
| Hilsea to Stamboliyski | 1,348.89 mi (2,170.83 km) |
| Hilsea to Stara Zagora | 1,384.10 mi (2,227.49 km) |
| Hilsea to Svilengrad | 1,433.46 mi (2,306.94 km) |
| Hilsea to Svishtov | 1,327.20 mi (2,135.92 km) |
| Hilsea to Targovishte | 1,393.19 mi (2,242.12 km) |
| Hilsea to Teteven | 1,307.12 mi (2,103.60 km) |
| Hilsea to Troyan | 1,327.39 mi (2,136.23 km) |
| Hilsea to Tryavna | 1,361.19 mi (2,190.63 km) |
| Hilsea to Tutrakan | 1,366.33 mi (2,198.89 km) |
| Hilsea to Varna | 1,451.59 mi (2,336.11 km) |
