| Colleyville to Smolyan | 6,103.59 mi (9,822.78 km) |
| Colleyville to Sofia | 5,999.51 mi (9,655.27 km) |
| Colleyville to Sopot | 6,053.78 mi (9,742.62 km) |
| Colleyville to Sozopol | 6,170.62 mi (9,930.66 km) |
| Colleyville to Sredets | 6,156.31 mi (9,907.63 km) |
| Colleyville to Stamboliyski | 6,070.87 mi (9,770.12 km) |
| Colleyville to Stara Zagora | 6,096.85 mi (9,811.94 km) |
| Colleyville to Svilengrad | 6,149.41 mi (9,896.53 km) |
| Colleyville to Svishtov | 6,028.35 mi (9,701.70 km) |
| Colleyville to Targovishte | 6,089.90 mi (9,800.75 km) |
| Colleyville to Teteven | 6,023.38 mi (9,693.69 km) |
| Colleyville to Troyan | 6,041.29 mi (9,722.51 km) |
| Colleyville to Tryavna | 6,070.27 mi (9,769.16 km) |
| Colleyville to Tutrakan | 6,051.53 mi (9,738.99 km) |
| Colleyville to Varna | 6,138.08 mi (9,878.29 km) |
