| Frisco to Smolyan | 6,077.43 mi (9,780.67 km) |
| Frisco to Sofia | 5,973.35 mi (9,613.17 km) |
| Frisco to Sopot | 6,027.66 mi (9,700.59 km) |
| Frisco to Sozopol | 6,144.59 mi (9,888.76 km) |
| Frisco to Sredets | 6,130.26 mi (9,865.70 km) |
| Frisco to Stamboliyski | 6,044.72 mi (9,728.04 km) |
| Frisco to Stara Zagora | 6,070.75 mi (9,769.93 km) |
| Frisco to Svilengrad | 6,123.30 mi (9,854.50 km) |
| Frisco to Svishtov | 6,002.29 mi (9,659.76 km) |
| Frisco to Targovishte | 6,063.87 mi (9,758.86 km) |
| Frisco to Teteven | 5,997.25 mi (9,651.64 km) |
| Frisco to Troyan | 6,015.17 mi (9,680.49 km) |
| Frisco to Tryavna | 6,044.18 mi (9,727.17 km) |
| Frisco to Tutrakan | 6,025.53 mi (9,697.16 km) |
| Frisco to Varna | 6,112.10 mi (9,836.47 km) |
