| Acton to Smolyan | 1,360.73 mi (2,189.88 km) |
| Acton to Sofia | 1,257.93 mi (2,024.45 km) |
| Acton to Sopot | 1,317.82 mi (2,120.83 km) |
| Acton to Sozopol | 1,449.04 mi (2,332.00 km) |
| Acton to Sredets | 1,430.95 mi (2,302.90 km) |
| Acton to Stamboliyski | 1,330.48 mi (2,141.19 km) |
| Acton to Stara Zagora | 1,363.60 mi (2,194.50 km) |
| Acton to Svilengrad | 1,413.80 mi (2,275.30 km) |
| Acton to Svishtov | 1,304.25 mi (2,098.98 km) |
| Acton to Targovishte | 1,369.75 mi (2,204.39 km) |
| Acton to Teteven | 1,287.16 mi (2,071.48 km) |
| Acton to Troyan | 1,306.96 mi (2,103.35 km) |
| Acton to Tryavna | 1,339.86 mi (2,156.30 km) |
| Acton to Tutrakan | 1,340.98 mi (2,158.11 km) |
| Acton to Varna | 1,426.82 mi (2,296.25 km) |
