| Blue Springs to Smolyan | 5,677.24 mi (9,136.63 km) |
| Blue Springs to Sofia | 5,572.97 mi (8,968.83 km) |
| Blue Springs to Sopot | 5,625.41 mi (9,053.23 km) |
| Blue Springs to Sozopol | 5,738.78 mi (9,235.67 km) |
| Blue Springs to Sredets | 5,725.22 mi (9,213.85 km) |
| Blue Springs to Stamboliyski | 5,643.73 mi (9,082.71 km) |
| Blue Springs to Stara Zagora | 5,667.66 mi (9,121.22 km) |
| Blue Springs to Svilengrad | 5,720.64 mi (9,206.48 km) |
| Blue Springs to Svishtov | 5,597.52 mi (9,008.34 km) |
| Blue Springs to Targovishte | 5,658.13 mi (9,105.88 km) |
| Blue Springs to Teteven | 5,595.17 mi (9,004.56 km) |
| Blue Springs to Troyan | 5,612.55 mi (9,032.52 km) |
| Blue Springs to Tryavna | 5,640.53 mi (9,077.55 km) |
| Blue Springs to Tutrakan | 5,618.43 mi (9,041.99 km) |
| Blue Springs to Varna | 5,704.71 mi (9,180.85 km) |
