| Burlingame to Smolyan | 6,585.74 mi (10,598.72 km) |
| Burlingame to Sofia | 6,485.57 mi (10,437.51 km) |
| Burlingame to Sopot | 6,520.38 mi (10,493.53 km) |
| Burlingame to Sozopol | 6,597.29 mi (10,617.32 km) |
| Burlingame to Sredets | 6,591.30 mi (10,607.68 km) |
| Burlingame to Stamboliyski | 6,547.77 mi (10,537.62 km) |
| Burlingame to Stara Zagora | 6,553.46 mi (10,546.77 km) |
| Burlingame to Svilengrad | 6,607.08 mi (10,633.07 km) |
| Burlingame to Svishtov | 6,472.95 mi (10,417.20 km) |
| Burlingame to Targovishte | 6,521.78 mi (10,495.79 km) |
| Burlingame to Teteven | 6,493.14 mi (10,449.69 km) |
| Burlingame to Troyan | 6,505.11 mi (10,468.96 km) |
| Burlingame to Tryavna | 6,523.08 mi (10,497.88 km) |
| Burlingame to Tutrakan | 6,472.04 mi (10,415.74 km) |
| Burlingame to Varna | 6,550.88 mi (10,542.62 km) |
