| Greenford to Smolyan | 1,364.27 mi (2,195.58 km) |
| Greenford to Sofia | 1,261.48 mi (2,030.15 km) |
| Greenford to Sopot | 1,321.36 mi (2,126.53 km) |
| Greenford to Sozopol | 1,452.57 mi (2,337.69 km) |
| Greenford to Sredets | 1,434.49 mi (2,308.59 km) |
| Greenford to Stamboliyski | 1,334.02 mi (2,146.90 km) |
| Greenford to Stara Zagora | 1,367.14 mi (2,200.20 km) |
| Greenford to Svilengrad | 1,417.35 mi (2,281.00 km) |
| Greenford to Svishtov | 1,307.78 mi (2,104.67 km) |
| Greenford to Targovishte | 1,373.28 mi (2,210.08 km) |
| Greenford to Teteven | 1,290.70 mi (2,077.19 km) |
| Greenford to Troyan | 1,310.50 mi (2,109.05 km) |
| Greenford to Tryavna | 1,343.40 mi (2,162.00 km) |
| Greenford to Tutrakan | 1,344.50 mi (2,163.77 km) |
| Greenford to Varna | 1,430.35 mi (2,301.92 km) |
