| Newburyport to Smolyan | 4,599.55 mi (7,402.25 km) |
| Newburyport to Sofia | 4,497.14 mi (7,237.45 km) |
| Newburyport to Sopot | 4,557.13 mi (7,333.99 km) |
| Newburyport to Sozopol | 4,685.85 mi (7,541.14 km) |
| Newburyport to Sredets | 4,668.69 mi (7,513.52 km) |
| Newburyport to Stamboliyski | 4,569.76 mi (7,354.32 km) |
| Newburyport to Stara Zagora | 4,602.68 mi (7,407.30 km) |
| Newburyport to Svilengrad | 4,653.15 mi (7,488.52 km) |
| Newburyport to Svishtov | 4,541.22 mi (7,308.38 km) |
| Newburyport to Targovishte | 4,605.81 mi (7,412.34 km) |
| Newburyport to Teteven | 4,526.47 mi (7,284.64 km) |
| Newburyport to Troyan | 4,546.10 mi (7,316.25 km) |
| Newburyport to Tryavna | 4,578.45 mi (7,368.31 km) |
| Newburyport to Tutrakan | 4,573.50 mi (7,360.34 km) |
| Newburyport to Varna | 4,660.16 mi (7,499.80 km) |
