| Kailua to Smolyan | 8,082.82 mi (13,008.04 km) |
| Kailua to Sofia | 8,007.94 mi (12,887.54 km) |
| Kailua to Sopot | 8,009.08 mi (12,889.36 km) |
| Kailua to Sozopol | 8,014.40 mi (12,897.92 km) |
| Kailua to Sredets | 8,021.38 mi (12,909.16 km) |
| Kailua to Stamboliyski | 8,045.22 mi (12,947.53 km) |
| Kailua to Stara Zagora | 8,021.59 mi (12,909.51 km) |
| Kailua to Svilengrad | 8,065.67 mi (12,980.45 km) |
| Kailua to Svishtov | 7,940.85 mi (12,779.56 km) |
| Kailua to Targovishte | 7,962.02 mi (12,813.63 km) |
| Kailua to Teteven | 7,991.66 mi (12,861.33 km) |
| Kailua to Troyan | 7,993.05 mi (12,863.57 km) |
| Kailua to Tryavna | 7,992.14 mi (12,862.11 km) |
| Kailua to Tutrakan | 7,906.78 mi (12,724.73 km) |
| Kailua to Varna | 7,958.30 mi (12,807.65 km) |
