| Richland to Popovo | 5,894.07 mi (9,485.59 km) |
| Richland to Provadia | 5,928.02 mi (9,540.22 km) |
| Richland to Radnevo | 5,954.77 mi (9,583.28 km) |
| Richland to Radomir | 5,876.64 mi (9,457.54 km) |
| Richland to Rakitovo | 5,936.47 mi (9,553.83 km) |
| Richland to Rakovski | 5,935.73 mi (9,552.63 km) |
| Richland to Razgrad | 5,887.97 mi (9,475.78 km) |
| Richland to Razlog | 5,929.56 mi (9,542.71 km) |
| Richland to Ruse | 5,858.52 mi (9,428.37 km) |
| Richland to Samokov | 5,903.00 mi (9,499.96 km) |
| Richland to Sandanski | 5,945.33 mi (9,568.08 km) |
| Richland to Sevlievo | 5,892.17 mi (9,482.53 km) |
| Richland to Shumen | 5,912.00 mi (9,514.45 km) |
| Richland to Silistra | 5,865.07 mi (9,438.93 km) |
| Richland to Sliven | 5,938.43 mi (9,556.98 km) |
