| Allen Park to Smolyan | 5,111.05 mi (8,225.44 km) |
| Allen Park to Sofia | 5,007.19 mi (8,058.30 km) |
| Allen Park to Sopot | 5,062.87 mi (8,147.90 km) |
| Allen Park to Sozopol | 5,182.93 mi (8,341.11 km) |
| Allen Park to Sredets | 5,167.83 mi (8,316.83 km) |
| Allen Park to Stamboliyski | 5,078.94 mi (8,173.77 km) |
| Allen Park to Stara Zagora | 5,106.61 mi (8,218.29 km) |
| Allen Park to Svilengrad | 5,158.74 mi (8,302.20 km) |
| Allen Park to Svishtov | 5,039.77 mi (8,110.72 km) |
| Allen Park to Targovishte | 5,102.23 mi (8,211.25 km) |
| Allen Park to Teteven | 5,032.35 mi (8,098.79 km) |
| Allen Park to Troyan | 5,050.71 mi (8,128.33 km) |
| Allen Park to Tryavna | 5,080.57 mi (8,176.38 km) |
| Allen Park to Tutrakan | 5,065.43 mi (8,152.02 km) |
| Allen Park to Varna | 5,152.20 mi (8,291.66 km) |
