| Grand Forks to Smolyan | 5,305.50 mi (8,538.38 km) |
| Grand Forks to Sofia | 5,201.78 mi (8,371.46 km) |
| Grand Forks to Sopot | 5,247.28 mi (8,444.69 km) |
| Grand Forks to Sozopol | 5,346.90 mi (8,605.01 km) |
| Grand Forks to Sredets | 5,336.26 mi (8,587.88 km) |
| Grand Forks to Stamboliyski | 5,269.69 mi (8,480.75 km) |
| Grand Forks to Stara Zagora | 5,286.17 mi (8,507.27 km) |
| Grand Forks to Svilengrad | 5,340.06 mi (8,593.99 km) |
| Grand Forks to Svishtov | 5,210.86 mi (8,386.07 km) |
| Grand Forks to Targovishte | 5,267.36 mi (8,477.00 km) |
| Grand Forks to Teteven | 5,217.96 mi (8,397.49 km) |
| Grand Forks to Troyan | 5,233.24 mi (8,422.09 km) |
| Grand Forks to Tryavna | 5,257.35 mi (8,460.89 km) |
| Grand Forks to Tutrakan | 5,223.09 mi (8,405.76 km) |
| Grand Forks to Varna | 5,307.45 mi (8,541.51 km) |
