| Allendale to Smolyan | 5,179.01 mi (8,334.81 km) |
| Allendale to Sofia | 5,074.88 mi (8,167.23 km) |
| Allendale to Sopot | 5,128.92 mi (8,254.20 km) |
| Allendale to Sozopol | 5,245.71 mi (8,442.15 km) |
| Allendale to Sredets | 5,231.36 mi (8,419.06 km) |
| Allendale to Stamboliyski | 5,146.16 mi (8,281.94 km) |
| Allendale to Stara Zagora | 5,171.93 mi (8,323.42 km) |
| Allendale to Svilengrad | 5,224.52 mi (8,408.06 km) |
| Allendale to Svishtov | 5,103.40 mi (8,213.12 km) |
| Allendale to Targovishte | 5,164.99 mi (8,312.24 km) |
| Allendale to Teteven | 5,098.53 mi (8,205.29 km) |
| Allendale to Troyan | 5,116.39 mi (8,234.04 km) |
| Allendale to Tryavna | 5,145.32 mi (8,280.60 km) |
| Allendale to Tutrakan | 5,126.75 mi (8,250.70 km) |
| Allendale to Varna | 5,213.34 mi (8,390.06 km) |
