| Cottonwood to Smolyan | 6,493.49 mi (10,450.26 km) |
| Cottonwood to Sofia | 6,390.06 mi (10,283.81 km) |
| Cottonwood to Sopot | 6,434.10 mi (10,354.69 km) |
| Cottonwood to Sozopol | 6,529.99 mi (10,509.01 km) |
| Cottonwood to Sredets | 6,520.21 mi (10,493.26 km) |
| Cottonwood to Stamboliyski | 6,457.30 mi (10,392.02 km) |
| Cottonwood to Stara Zagora | 6,472.14 mi (10,415.91 km) |
| Cottonwood to Svilengrad | 6,526.11 mi (10,502.76 km) |
| Cottonwood to Svishtov | 6,395.76 mi (10,292.98 km) |
| Cottonwood to Targovishte | 6,451.00 mi (10,381.89 km) |
| Cottonwood to Teteven | 6,405.03 mi (10,307.91 km) |
| Cottonwood to Troyan | 6,419.84 mi (10,331.73 km) |
| Cottonwood to Tryavna | 6,443.00 mi (10,369.00 km) |
| Cottonwood to Tutrakan | 6,405.54 mi (10,308.72 km) |
| Cottonwood to Varna | 6,489.03 mi (10,443.08 km) |
