| Larkspur to Smolyan | 6,567.10 mi (10,568.72 km) |
| Larkspur to Sofia | 6,467.06 mi (10,407.73 km) |
| Larkspur to Sopot | 6,501.58 mi (10,463.29 km) |
| Larkspur to Sozopol | 6,577.92 mi (10,586.13 km) |
| Larkspur to Sredets | 6,572.04 mi (10,576.67 km) |
| Larkspur to Stamboliyski | 6,529.09 mi (10,507.56 km) |
| Larkspur to Stara Zagora | 6,534.50 mi (10,516.26 km) |
| Larkspur to Svilengrad | 6,588.10 mi (10,602.52 km) |
| Larkspur to Svishtov | 6,453.90 mi (10,386.55 km) |
| Larkspur to Targovishte | 6,502.53 mi (10,464.81 km) |
| Larkspur to Teteven | 6,474.41 mi (10,419.55 km) |
| Larkspur to Troyan | 6,486.29 mi (10,438.67 km) |
| Larkspur to Tryavna | 6,504.10 mi (10,467.34 km) |
| Larkspur to Tutrakan | 6,452.68 mi (10,384.59 km) |
| Larkspur to Varna | 6,531.36 mi (10,511.21 km) |
