| Walnut Park to Smolyan | 6,710.89 mi (10,800.14 km) |
| Walnut Park to Sofia | 6,608.70 mi (10,635.68 km) |
| Walnut Park to Sopot | 6,648.49 mi (10,699.71 km) |
| Walnut Park to Sozopol | 6,735.52 mi (10,839.77 km) |
| Walnut Park to Sredets | 6,727.55 mi (10,826.94 km) |
| Walnut Park to Stamboliyski | 6,673.75 mi (10,740.37 km) |
| Walnut Park to Stara Zagora | 6,684.26 mi (10,757.28 km) |
| Walnut Park to Svilengrad | 6,738.23 mi (10,844.13 km) |
| Walnut Park to Svishtov | 6,605.67 mi (10,630.81 km) |
| Walnut Park to Targovishte | 6,657.98 mi (10,714.99 km) |
| Walnut Park to Teteven | 6,620.21 mi (10,654.19 km) |
| Walnut Park to Troyan | 6,633.70 mi (10,675.91 km) |
| Walnut Park to Tryavna | 6,654.44 mi (10,709.29 km) |
| Walnut Park to Tutrakan | 6,610.31 mi (10,638.26 km) |
| Walnut Park to Varna | 6,691.77 mi (10,769.37 km) |
