| Merritt Island to Smolyan | 5,661.34 mi (9,111.04 km) |
| Merritt Island to Sofia | 5,561.71 mi (8,950.71 km) |
| Merritt Island to Sopot | 5,625.65 mi (9,053.62 km) |
| Merritt Island to Sozopol | 5,761.78 mi (9,272.69 km) |
| Merritt Island to Sredets | 5,742.76 mi (9,242.09 km) |
| Merritt Island to Stamboliyski | 5,634.46 mi (9,067.79 km) |
| Merritt Island to Stara Zagora | 5,672.61 mi (9,129.18 km) |
| Merritt Island to Svilengrad | 5,720.78 mi (9,206.71 km) |
| Merritt Island to Svishtov | 5,617.18 mi (9,039.98 km) |
| Merritt Island to Targovishte | 5,683.17 mi (9,146.19 km) |
| Merritt Island to Teteven | 5,595.17 mi (9,004.56 km) |
| Merritt Island to Troyan | 5,615.94 mi (9,037.98 km) |
| Merritt Island to Tryavna | 5,650.49 mi (9,093.59 km) |
| Merritt Island to Tutrakan | 5,655.37 mi (9,101.44 km) |
| Merritt Island to Varna | 5,741.09 mi (9,239.40 km) |
