| Richfield to Popovo | 5,297.73 mi (8,525.87 km) |
| Richfield to Provadia | 5,344.66 mi (8,601.40 km) |
| Richfield to Radnevo | 5,344.21 mi (8,600.67 km) |
| Richfield to Radomir | 5,232.88 mi (8,421.51 km) |
| Richfield to Rakitovo | 5,300.33 mi (8,530.06 km) |
| Richfield to Rakovski | 5,313.30 mi (8,550.93 km) |
| Richfield to Razgrad | 5,296.92 mi (8,524.57 km) |
| Richfield to Razlog | 5,285.03 mi (8,505.43 km) |
| Richfield to Ruse | 5,263.60 mi (8,470.95 km) |
| Richfield to Samokov | 5,264.19 mi (8,471.89 km) |
| Richfield to Sandanski | 5,295.36 mi (8,522.07 km) |
| Richfield to Sevlievo | 5,279.02 mi (8,495.77 km) |
| Richfield to Shumen | 5,323.51 mi (8,567.36 km) |
| Richfield to Silistra | 5,288.93 mi (8,511.72 km) |
| Richfield to Sliven | 5,336.60 mi (8,588.42 km) |
