| Calexico to Smolyan | 6,715.41 mi (10,807.41 km) |
| Calexico to Sofia | 6,612.37 mi (10,641.59 km) |
| Calexico to Sopot | 6,654.88 mi (10,709.99 km) |
| Calexico to Sozopol | 6,747.48 mi (10,859.03 km) |
| Calexico to Sredets | 6,738.39 mi (10,844.39 km) |
| Calexico to Stamboliyski | 6,678.85 mi (10,748.58 km) |
| Calexico to Stara Zagora | 6,692.10 mi (10,769.89 km) |
| Calexico to Svilengrad | 6,746.10 mi (10,856.80 km) |
| Calexico to Svishtov | 6,614.84 mi (10,645.55 km) |
| Calexico to Targovishte | 6,669.00 mi (10,732.72 km) |
| Calexico to Teteven | 6,626.08 mi (10,663.65 km) |
| Calexico to Troyan | 6,640.41 mi (10,686.71 km) |
| Calexico to Tryavna | 6,662.68 mi (10,722.55 km) |
| Calexico to Tutrakan | 6,622.66 mi (10,658.14 km) |
| Calexico to Varna | 6,705.41 mi (10,791.32 km) |
