| West Richland to Popovo | 5,894.32 mi (9,486.00 km) |
| West Richland to Provadia | 5,928.20 mi (9,540.52 km) |
| West Richland to Radnevo | 5,955.08 mi (9,583.78 km) |
| West Richland to Radomir | 5,877.14 mi (9,458.34 km) |
| West Richland to Rakitovo | 5,936.92 mi (9,554.55 km) |
| West Richland to Rakovski | 5,936.10 mi (9,553.23 km) |
| West Richland to Razgrad | 5,888.20 mi (9,476.15 km) |
| West Richland to Razlog | 5,930.05 mi (9,543.49 km) |
| West Richland to Ruse | 5,858.77 mi (9,428.78 km) |
| West Richland to Samokov | 5,903.46 mi (9,500.70 km) |
| West Richland to Sandanski | 5,945.84 mi (9,568.91 km) |
| West Richland to Sevlievo | 5,892.51 mi (9,483.08 km) |
| West Richland to Shumen | 5,912.21 mi (9,514.79 km) |
| West Richland to Silistra | 5,865.24 mi (9,439.19 km) |
| West Richland to Sliven | 5,938.70 mi (9,557.42 km) |
