| Gunbarrel to Smolyan | 5,979.95 mi (9,623.80 km) |
| Gunbarrel to Sofia | 5,876.18 mi (9,456.80 km) |
| Gunbarrel to Sopot | 5,921.87 mi (9,530.33 km) |
| Gunbarrel to Sozopol | 6,021.44 mi (9,690.58 km) |
| Gunbarrel to Sredets | 6,010.86 mi (9,673.54 km) |
| Gunbarrel to Stamboliyski | 5,944.19 mi (9,566.25 km) |
| Gunbarrel to Stara Zagora | 5,960.80 mi (9,592.98 km) |
| Gunbarrel to Svilengrad | 6,014.68 mi (9,679.69 km) |
| Gunbarrel to Svishtov | 5,885.49 mi (9,471.78 km) |
| Gunbarrel to Targovishte | 5,941.94 mi (9,562.62 km) |
| Gunbarrel to Teteven | 5,892.52 mi (9,483.10 km) |
| Gunbarrel to Troyan | 5,907.85 mi (9,507.76 km) |
| Gunbarrel to Tryavna | 5,931.99 mi (9,546.61 km) |
| Gunbarrel to Tutrakan | 5,897.57 mi (9,491.22 km) |
| Gunbarrel to Varna | 5,981.84 mi (9,626.83 km) |
