| Costa Mesa to Smolyan | 6,721.35 mi (10,816.97 km) |
| Costa Mesa to Sofia | 6,619.03 mi (10,652.30 km) |
| Costa Mesa to Sopot | 6,659.20 mi (10,716.95 km) |
| Costa Mesa to Sozopol | 6,747.01 mi (10,858.27 km) |
| Costa Mesa to Sredets | 6,738.89 mi (10,845.19 km) |
| Costa Mesa to Stamboliyski | 6,684.29 mi (10,757.32 km) |
| Costa Mesa to Stara Zagora | 6,695.18 mi (10,774.86 km) |
| Costa Mesa to Svilengrad | 6,749.16 mi (10,861.72 km) |
| Costa Mesa to Svishtov | 6,616.77 mi (10,648.66 km) |
| Costa Mesa to Targovishte | 6,669.34 mi (10,733.26 km) |
| Costa Mesa to Teteven | 6,630.84 mi (10,671.31 km) |
| Costa Mesa to Troyan | 6,644.46 mi (10,693.22 km) |
| Costa Mesa to Tryavna | 6,665.41 mi (10,726.95 km) |
| Costa Mesa to Tutrakan | 6,621.84 mi (10,656.82 km) |
| Costa Mesa to Varna | 6,703.49 mi (10,788.23 km) |
