| Haverhill to Smolyan | 1,346.97 mi (2,167.74 km) |
| Haverhill to Sofia | 1,243.59 mi (2,001.37 km) |
| Haverhill to Sopot | 1,301.92 mi (2,095.25 km) |
| Haverhill to Sozopol | 1,430.48 mi (2,302.14 km) |
| Haverhill to Sredets | 1,413.02 mi (2,274.04 km) |
| Haverhill to Stamboliyski | 1,315.85 mi (2,117.66 km) |
| Haverhill to Stara Zagora | 1,347.13 mi (2,168.00 km) |
| Haverhill to Svilengrad | 1,398.00 mi (2,249.86 km) |
| Haverhill to Svishtov | 1,285.74 mi (2,069.21 km) |
| Haverhill to Targovishte | 1,350.73 mi (2,173.79 km) |
| Haverhill to Teteven | 1,271.27 mi (2,045.91 km) |
| Haverhill to Troyan | 1,290.63 mi (2,077.08 km) |
| Haverhill to Tryavna | 1,322.71 mi (2,128.70 km) |
| Haverhill to Tutrakan | 1,320.36 mi (2,124.91 km) |
| Haverhill to Varna | 1,406.59 mi (2,263.69 km) |
