| Griffin to Smolyan | 5,580.60 mi (8,981.11 km) |
| Griffin to Sofia | 5,478.37 mi (8,816.59 km) |
| Griffin to Sopot | 5,538.62 mi (8,913.55 km) |
| Griffin to Sozopol | 5,667.53 mi (9,121.01 km) |
| Griffin to Sredets | 5,650.36 mi (9,093.38 km) |
| Griffin to Stamboliyski | 5,551.03 mi (8,933.52 km) |
| Griffin to Stara Zagora | 5,584.24 mi (8,986.97 km) |
| Griffin to Svilengrad | 5,634.62 mi (9,068.05 km) |
| Griffin to Svishtov | 5,522.90 mi (8,888.25 km) |
| Griffin to Targovishte | 5,587.49 mi (8,992.20 km) |
| Griffin to Teteven | 5,507.96 mi (8,864.20 km) |
| Griffin to Troyan | 5,527.65 mi (8,895.90 km) |
| Griffin to Tryavna | 5,560.08 mi (8,948.09 km) |
| Griffin to Tutrakan | 5,555.07 mi (8,940.02 km) |
| Griffin to Varna | 5,641.74 mi (9,079.51 km) |
