| Cleethorpes to Smolyan | 1,406.67 mi (2,263.82 km) |
| Cleethorpes to Sofia | 1,302.61 mi (2,096.35 km) |
| Cleethorpes to Sopot | 1,357.94 mi (2,185.39 km) |
| Cleethorpes to Sozopol | 1,481.06 mi (2,383.53 km) |
| Cleethorpes to Sredets | 1,464.85 mi (2,357.45 km) |
| Cleethorpes to Stamboliyski | 1,374.12 mi (2,211.43 km) |
| Cleethorpes to Stara Zagora | 1,401.95 mi (2,256.21 km) |
| Cleethorpes to Svilengrad | 1,453.87 mi (2,339.77 km) |
| Cleethorpes to Svishtov | 1,336.91 mi (2,151.54 km) |
| Cleethorpes to Targovishte | 1,400.66 mi (2,254.14 km) |
| Cleethorpes to Teteven | 1,327.40 mi (2,136.25 km) |
| Cleethorpes to Troyan | 1,345.89 mi (2,166.00 km) |
| Cleethorpes to Tryavna | 1,376.33 mi (2,214.98 km) |
| Cleethorpes to Tutrakan | 1,367.19 mi (2,200.27 km) |
| Cleethorpes to Varna | 1,453.92 mi (2,339.85 km) |
