| Acton to Popovo | 1,351.29 mi (2,174.69 km) |
| Acton to Provadia | 1,407.84 mi (2,265.70 km) |
| Acton to Radnevo | 1,380.70 mi (2,222.03 km) |
| Acton to Radomir | 1,248.89 mi (2,009.89 km) |
| Acton to Rakitovo | 1,318.66 mi (2,122.17 km) |
| Acton to Rakovski | 1,341.56 mi (2,159.02 km) |
| Acton to Razgrad | 1,356.10 mi (2,182.44 km) |
| Acton to Razlog | 1,298.20 mi (2,089.26 km) |
| Acton to Ruse | 1,321.61 mi (2,126.92 km) |
| Acton to Samokov | 1,282.30 mi (2,063.66 km) |
| Acton to Sandanski | 1,304.66 mi (2,099.65 km) |
| Acton to Sevlievo | 1,317.57 mi (2,120.42 km) |
| Acton to Shumen | 1,383.08 mi (2,225.85 km) |
| Acton to Silistra | 1,365.66 mi (2,197.81 km) |
| Acton to Sliven | 1,381.66 mi (2,223.56 km) |
