| Collado-Villalba to Smolyan | 1,489.09 mi (2,396.45 km) |
| Collado-Villalba to Sofia | 1,412.05 mi (2,272.47 km) |
| Collado-Villalba to Sopot | 1,484.25 mi (2,388.66 km) |
| Collado-Villalba to Sozopol | 1,635.28 mi (2,631.74 km) |
| Collado-Villalba to Sredets | 1,610.44 mi (2,591.76 km) |
| Collado-Villalba to Stamboliyski | 1,476.35 mi (2,375.96 km) |
| Collado-Villalba to Stara Zagora | 1,531.18 mi (2,464.19 km) |
| Collado-Villalba to Svilengrad | 1,564.31 mi (2,517.51 km) |
| Collado-Villalba to Svishtov | 1,510.52 mi (2,430.94 km) |
| Collado-Villalba to Targovishte | 1,573.69 mi (2,532.62 km) |
| Collado-Villalba to Teteven | 1,458.53 mi (2,347.27 km) |
| Collado-Villalba to Troyan | 1,481.40 mi (2,384.09 km) |
| Collado-Villalba to Tryavna | 1,521.05 mi (2,447.89 km) |
| Collado-Villalba to Tutrakan | 1,572.45 mi (2,530.62 km) |
| Collado-Villalba to Varna | 1,640.80 mi (2,640.61 km) |
