| Leigh-on-Sea to Smolyan | 1,324.40 mi (2,131.41 km) |
| Leigh-on-Sea to Sofia | 1,221.39 mi (1,965.63 km) |
| Leigh-on-Sea to Sopot | 1,280.78 mi (2,061.22 km) |
| Leigh-on-Sea to Sozopol | 1,411.24 mi (2,271.17 km) |
| Leigh-on-Sea to Sredets | 1,393.33 mi (2,242.34 km) |
| Leigh-on-Sea to Stamboliyski | 1,293.85 mi (2,082.25 km) |
| Leigh-on-Sea to Stara Zagora | 1,326.39 mi (2,134.62 km) |
| Leigh-on-Sea to Svilengrad | 1,376.81 mi (2,215.76 km) |
| Leigh-on-Sea to Svishtov | 1,266.45 mi (2,038.15 km) |
| Leigh-on-Sea to Targovishte | 1,331.82 mi (2,143.35 km) |
| Leigh-on-Sea to Teteven | 1,250.12 mi (2,011.87 km) |
| Leigh-on-Sea to Troyan | 1,269.79 mi (2,043.53 km) |
| Leigh-on-Sea to Tryavna | 1,302.45 mi (2,096.09 km) |
| Leigh-on-Sea to Tutrakan | 1,302.65 mi (2,096.41 km) |
| Leigh-on-Sea to Varna | 1,388.59 mi (2,234.72 km) |
