| Northfield to Smolyan | 1,449.81 mi (2,333.25 km) |
| Northfield to Sofia | 1,346.61 mi (2,167.16 km) |
| Northfield to Sopot | 1,405.39 mi (2,261.75 km) |
| Northfield to Sozopol | 1,534.46 mi (2,469.47 km) |
| Northfield to Sredets | 1,516.91 mi (2,441.22 km) |
| Northfield to Stamboliyski | 1,418.97 mi (2,283.61 km) |
| Northfield to Stara Zagora | 1,450.73 mi (2,334.73 km) |
| Northfield to Svilengrad | 1,501.45 mi (2,416.35 km) |
| Northfield to Svishtov | 1,389.70 mi (2,236.51 km) |
| Northfield to Targovishte | 1,454.76 mi (2,341.20 km) |
| Northfield to Teteven | 1,374.73 mi (2,212.41 km) |
| Northfield to Troyan | 1,394.20 mi (2,243.74 km) |
| Northfield to Tryavna | 1,426.45 mi (2,295.66 km) |
| Northfield to Tutrakan | 1,424.50 mi (2,292.51 km) |
| Northfield to Varna | 1,510.72 mi (2,431.26 km) |
