| Rio Maior to Popovo | 1,831.40 mi (2,947.36 km) |
| Rio Maior to Provadia | 1,892.43 mi (3,045.57 km) |
| Rio Maior to Radnevo | 1,821.83 mi (2,931.95 km) |
| Rio Maior to Radomir | 1,668.82 mi (2,685.70 km) |
| Rio Maior to Rakitovo | 1,729.44 mi (2,783.26 km) |
| Rio Maior to Rakovski | 1,772.64 mi (2,852.79 km) |
| Rio Maior to Razgrad | 1,844.85 mi (2,969.01 km) |
| Rio Maior to Razlog | 1,698.47 mi (2,733.42 km) |
| Rio Maior to Ruse | 1,815.79 mi (2,922.23 km) |
| Rio Maior to Samokov | 1,700.55 mi (2,736.77 km) |
| Rio Maior to Sandanski | 1,690.99 mi (2,721.38 km) |
| Rio Maior to Sevlievo | 1,776.43 mi (2,858.89 km) |
| Rio Maior to Shumen | 1,866.82 mi (3,004.35 km) |
| Rio Maior to Silistra | 1,879.84 mi (3,025.31 km) |
| Rio Maior to Sliven | 1,839.77 mi (2,960.82 km) |
