| Holbeach to Smolyan | 1,383.35 mi (2,226.29 km) |
| Holbeach to Sofia | 1,279.60 mi (2,059.32 km) |
| Holbeach to Sopot | 1,336.57 mi (2,151.00 km) |
| Holbeach to Sozopol | 1,462.65 mi (2,353.91 km) |
| Holbeach to Sredets | 1,445.77 mi (2,326.74 km) |
| Holbeach to Stamboliyski | 1,351.55 mi (2,175.11 km) |
| Holbeach to Stara Zagora | 1,381.24 mi (2,222.90 km) |
| Holbeach to Svilengrad | 1,432.63 mi (2,305.59 km) |
| Holbeach to Svishtov | 1,318.11 mi (2,121.29 km) |
| Holbeach to Targovishte | 1,382.55 mi (2,225.00 km) |
| Holbeach to Teteven | 1,305.95 mi (2,101.73 km) |
| Holbeach to Troyan | 1,324.92 mi (2,132.25 km) |
| Holbeach to Tryavna | 1,356.25 mi (2,182.67 km) |
| Holbeach to Tutrakan | 1,350.70 mi (2,173.74 km) |
| Holbeach to Varna | 1,437.21 mi (2,312.97 km) |
