| Spanish Springs to Popovo | 6,319.39 mi (10,170.07 km) |
| Spanish Springs to Provadia | 6,355.48 mi (10,228.15 km) |
| Spanish Springs to Radnevo | 6,378.17 mi (10,264.68 km) |
| Spanish Springs to Radomir | 6,294.07 mi (10,129.33 km) |
| Spanish Springs to Rakitovo | 6,355.55 mi (10,228.27 km) |
| Spanish Springs to Rakovski | 6,357.10 mi (10,230.77 km) |
| Spanish Springs to Razgrad | 6,314.07 mi (10,161.52 km) |
| Spanish Springs to Razlog | 6,347.15 mi (10,214.75 km) |
| Spanish Springs to Ruse | 6,283.87 mi (10,112.91 km) |
| Spanish Springs to Samokov | 6,321.43 mi (10,173.36 km) |
| Spanish Springs to Sandanski | 6,362.04 mi (10,238.72 km) |
| Spanish Springs to Sevlievo | 6,314.83 mi (10,162.74 km) |
| Spanish Springs to Shumen | 6,338.61 mi (10,201.01 km) |
| Spanish Springs to Silistra | 6,293.28 mi (10,128.05 km) |
| Spanish Springs to Sliven | 6,363.13 mi (10,240.46 km) |
