| Clondalkin to Smolyan | 1,645.08 mi (2,647.50 km) |
| Clondalkin to Sofia | 1,541.86 mi (2,481.38 km) |
| Clondalkin to Sopot | 1,600.47 mi (2,575.71 km) |
| Clondalkin to Sozopol | 1,728.85 mi (2,782.32 km) |
| Clondalkin to Sredets | 1,711.51 mi (2,754.41 km) |
| Clondalkin to Stamboliyski | 1,614.20 mi (2,597.80 km) |
| Clondalkin to Stara Zagora | 1,645.72 mi (2,648.53 km) |
| Clondalkin to Svilengrad | 1,696.55 mi (2,730.33 km) |
| Clondalkin to Svishtov | 1,584.15 mi (2,549.44 km) |
| Clondalkin to Targovishte | 1,648.99 mi (2,653.80 km) |
| Clondalkin to Teteven | 1,569.82 mi (2,526.38 km) |
| Clondalkin to Troyan | 1,589.21 mi (2,557.59 km) |
| Clondalkin to Tryavna | 1,621.29 mi (2,609.21 km) |
| Clondalkin to Tutrakan | 1,618.03 mi (2,603.97 km) |
| Clondalkin to Varna | 1,704.41 mi (2,742.98 km) |
