| Isla Vista to Smolyan | 6,725.18 mi (10,823.13 km) |
| Isla Vista to Sofia | 6,623.54 mi (10,659.56 km) |
| Isla Vista to Sopot | 6,661.82 mi (10,721.16 km) |
| Isla Vista to Sozopol | 6,745.74 mi (10,856.23 km) |
| Isla Vista to Sredets | 6,738.39 mi (10,844.39 km) |
| Isla Vista to Stamboliyski | 6,687.76 mi (10,762.91 km) |
| Isla Vista to Stara Zagora | 6,696.78 mi (10,777.43 km) |
| Isla Vista to Svilengrad | 6,750.68 mi (10,864.16 km) |
| Isla Vista to Svishtov | 6,617.54 mi (10,649.90 km) |
| Isla Vista to Targovishte | 6,668.79 mi (10,732.39 km) |
| Isla Vista to Teteven | 6,633.84 mi (10,676.13 km) |
| Isla Vista to Troyan | 6,646.87 mi (10,697.10 km) |
| Isla Vista to Tryavna | 6,666.76 mi (10,729.12 km) |
| Isla Vista to Tutrakan | 6,620.44 mi (10,654.56 km) |
| Isla Vista to Varna | 6,701.13 mi (10,784.42 km) |
