| Somerton to Smolyan | 6,697.99 mi (10,779.37 km) |
| Somerton to Sofia | 6,594.78 mi (10,613.27 km) |
| Somerton to Sopot | 6,637.92 mi (10,682.71 km) |
| Somerton to Sozopol | 6,731.85 mi (10,833.87 km) |
| Somerton to Sredets | 6,722.48 mi (10,818.79 km) |
| Somerton to Stamboliyski | 6,661.58 mi (10,720.78 km) |
| Somerton to Stara Zagora | 6,675.48 mi (10,743.15 km) |
| Somerton to Svilengrad | 6,729.48 mi (10,830.05 km) |
| Somerton to Svishtov | 6,598.57 mi (10,619.37 km) |
| Somerton to Targovishte | 6,653.16 mi (10,707.23 km) |
| Somerton to Teteven | 6,609.02 mi (10,636.18 km) |
| Somerton to Troyan | 6,623.54 mi (10,659.56 km) |
| Somerton to Tryavna | 6,646.17 mi (10,695.98 km) |
| Somerton to Tutrakan | 6,607.16 mi (10,633.20 km) |
| Somerton to Varna | 6,690.20 mi (10,766.84 km) |
