| Alfaro to Popovo | 1,415.07 mi (2,277.33 km) |
| Alfaro to Provadia | 1,476.39 mi (2,376.02 km) |
| Alfaro to Radnevo | 1,409.77 mi (2,268.80 km) |
| Alfaro to Radomir | 1,256.71 mi (2,022.48 km) |
| Alfaro to Rakitovo | 1,319.69 mi (2,123.84 km) |
| Alfaro to Rakovski | 1,361.03 mi (2,190.36 km) |
| Alfaro to Razgrad | 1,427.83 mi (2,297.87 km) |
| Alfaro to Razlog | 1,289.55 mi (2,075.32 km) |
| Alfaro to Ruse | 1,397.91 mi (2,249.71 km) |
| Alfaro to Samokov | 1,289.27 mi (2,074.87 km) |
| Alfaro to Sandanski | 1,283.90 mi (2,066.23 km) |
| Alfaro to Sevlievo | 1,361.59 mi (2,191.26 km) |
| Alfaro to Shumen | 1,450.55 mi (2,334.44 km) |
| Alfaro to Silistra | 1,460.89 mi (2,351.07 km) |
| Alfaro to Sliven | 1,425.94 mi (2,294.83 km) |
