| Lake Ridge to Popovo | 5,028.11 mi (8,091.96 km) |
| Lake Ridge to Provadia | 5,082.91 mi (8,180.15 km) |
| Lake Ridge to Radnevo | 5,060.14 mi (8,143.51 km) |
| Lake Ridge to Radomir | 4,927.76 mi (7,930.46 km) |
| Lake Ridge to Rakitovo | 4,997.64 mi (8,042.93 km) |
| Lake Ridge to Rakovski | 5,021.24 mi (8,080.90 km) |
| Lake Ridge to Razgrad | 5,031.70 mi (8,097.74 km) |
| Lake Ridge to Razlog | 4,976.24 mi (8,008.49 km) |
| Lake Ridge to Ruse | 4,997.20 mi (8,042.21 km) |
| Lake Ridge to Samokov | 4,961.38 mi (7,984.56 km) |
| Lake Ridge to Sandanski | 4,981.46 mi (8,016.89 km) |
| Lake Ridge to Sevlievo | 4,996.65 mi (8,041.33 km) |
| Lake Ridge to Shumen | 5,058.81 mi (8,141.36 km) |
| Lake Ridge to Silistra | 5,036.43 mi (8,105.35 km) |
| Lake Ridge to Sliven | 5,060.16 mi (8,143.54 km) |
