| Colton to Smolyan | 6,682.07 mi (10,753.75 km) |
| Colton to Sofia | 6,579.66 mi (10,588.94 km) |
| Colton to Sopot | 6,620.10 mi (10,654.02 km) |
| Colton to Sozopol | 6,708.50 mi (10,796.28 km) |
| Colton to Sredets | 6,700.25 mi (10,783.01 km) |
| Colton to Stamboliyski | 6,645.06 mi (10,694.20 km) |
| Colton to Stara Zagora | 6,656.23 mi (10,712.17 km) |
| Colton to Svilengrad | 6,710.21 mi (10,799.05 km) |
| Colton to Svishtov | 6,577.95 mi (10,586.18 km) |
| Colton to Targovishte | 6,630.71 mi (10,671.10 km) |
| Colton to Teteven | 6,591.69 mi (10,608.30 km) |
| Colton to Troyan | 6,605.39 mi (10,630.35 km) |
| Colton to Tryavna | 6,626.50 mi (10,664.32 km) |
| Colton to Tutrakan | 6,583.36 mi (10,594.89 km) |
| Colton to Varna | 6,665.15 mi (10,726.53 km) |
