| Gulbene to Smolyan | 1,080.53 mi (1,738.94 km) |
| Gulbene to Sofia | 1,010.74 mi (1,626.62 km) |
| Gulbene to Sopot | 1,006.84 mi (1,620.35 km) |
| Gulbene to Sozopol | 1,019.98 mi (1,641.50 km) |
| Gulbene to Sredets | 1,023.93 mi (1,647.85 km) |
| Gulbene to Stamboliyski | 1,043.29 mi (1,679.01 km) |
| Gulbene to Stara Zagora | 1,019.13 mi (1,640.13 km) |
| Gulbene to Svilengrad | 1,064.31 mi (1,712.85 km) |
| Gulbene to Svishtov | 938.19 mi (1,509.87 km) |
| Gulbene to Targovishte | 961.58 mi (1,547.51 km) |
| Gulbene to Teteven | 990.56 mi (1,594.15 km) |
| Gulbene to Troyan | 990.89 mi (1,594.69 km) |
| Gulbene to Tryavna | 989.53 mi (1,592.50 km) |
| Gulbene to Tutrakan | 906.29 mi (1,458.54 km) |
| Gulbene to Varna | 965.20 mi (1,553.33 km) |
