| Houten to Smolyan | 1,166.09 mi (1,876.65 km) |
| Houten to Sofia | 1,061.98 mi (1,709.09 km) |
| Houten to Sopot | 1,117.15 mi (1,797.88 km) |
| Houten to Sozopol | 1,240.89 mi (1,997.01 km) |
| Houten to Sredets | 1,224.44 mi (1,970.55 km) |
| Houten to Stamboliyski | 1,133.41 mi (1,824.04 km) |
| Houten to Stara Zagora | 1,161.20 mi (1,868.77 km) |
| Houten to Svilengrad | 1,213.08 mi (1,952.27 km) |
| Houten to Svishtov | 1,096.57 mi (1,764.77 km) |
| Houten to Targovishte | 1,160.60 mi (1,867.80 km) |
| Houten to Teteven | 1,086.61 mi (1,748.74 km) |
| Houten to Troyan | 1,105.12 mi (1,778.52 km) |
| Houten to Tryavna | 1,135.67 mi (1,827.68 km) |
| Houten to Tutrakan | 1,127.95 mi (1,815.26 km) |
| Houten to Varna | 1,214.56 mi (1,954.65 km) |
