| Celbridge to Smolyan | 1,651.13 mi (2,657.23 km) |
| Celbridge to Sofia | 1,547.91 mi (2,491.12 km) |
| Celbridge to Sopot | 1,606.54 mi (2,585.47 km) |
| Celbridge to Sozopol | 1,734.92 mi (2,792.09 km) |
| Celbridge to Sredets | 1,717.58 mi (2,764.18 km) |
| Celbridge to Stamboliyski | 1,620.25 mi (2,607.55 km) |
| Celbridge to Stara Zagora | 1,651.78 mi (2,658.29 km) |
| Celbridge to Svilengrad | 1,702.61 mi (2,740.08 km) |
| Celbridge to Svishtov | 1,590.22 mi (2,559.21 km) |
| Celbridge to Targovishte | 1,655.07 mi (2,663.57 km) |
| Celbridge to Teteven | 1,575.88 mi (2,536.13 km) |
| Celbridge to Troyan | 1,595.28 mi (2,567.35 km) |
| Celbridge to Tryavna | 1,627.36 mi (2,618.98 km) |
| Celbridge to Tutrakan | 1,624.10 mi (2,613.73 km) |
| Celbridge to Varna | 1,710.48 mi (2,752.75 km) |
