| Morro Bay to Smolyan | 6,689.78 mi (10,766.16 km) |
| Morro Bay to Sofia | 6,588.63 mi (10,603.38 km) |
| Morro Bay to Sopot | 6,625.68 mi (10,662.99 km) |
| Morro Bay to Sozopol | 6,707.10 mi (10,794.03 km) |
| Morro Bay to Sredets | 6,700.24 mi (10,782.99 km) |
| Morro Bay to Stamboliyski | 6,652.15 mi (10,705.60 km) |
| Morro Bay to Stara Zagora | 6,659.97 mi (10,718.19 km) |
| Morro Bay to Svilengrad | 6,713.79 mi (10,804.80 km) |
| Morro Bay to Svishtov | 6,580.24 mi (10,589.88 km) |
| Morro Bay to Targovishte | 6,630.64 mi (10,670.98 km) |
| Morro Bay to Teteven | 6,597.95 mi (10,618.38 km) |
| Morro Bay to Troyan | 6,610.61 mi (10,638.75 km) |
| Morro Bay to Tryavna | 6,629.81 mi (10,669.65 km) |
| Morro Bay to Tutrakan | 6,581.76 mi (10,592.33 km) |
| Morro Bay to Varna | 6,661.81 mi (10,721.14 km) |
