| Richton Park to Popovo | 5,286.00 mi (8,507.00 km) |
| Richton Park to Provadia | 5,336.47 mi (8,588.22 km) |
| Richton Park to Radnevo | 5,326.83 mi (8,572.70 km) |
| Richton Park to Radomir | 5,206.07 mi (8,378.36 km) |
| Richton Park to Rakitovo | 5,274.96 mi (8,489.23 km) |
| Richton Park to Rakovski | 5,292.42 mi (8,517.32 km) |
| Richton Park to Razgrad | 5,287.00 mi (8,508.60 km) |
| Richton Park to Razlog | 5,257.03 mi (8,460.37 km) |
| Richton Park to Ruse | 5,252.97 mi (8,453.84 km) |
| Richton Park to Samokov | 5,238.54 mi (8,430.61 km) |
| Richton Park to Sandanski | 5,265.30 mi (8,473.69 km) |
| Richton Park to Sevlievo | 5,261.92 mi (8,468.25 km) |
| Richton Park to Shumen | 5,313.97 mi (8,552.01 km) |
| Richton Park to Silistra | 5,284.17 mi (8,504.05 km) |
| Richton Park to Sliven | 5,322.32 mi (8,565.44 km) |
