| Decatur to Popovo | 5,411.07 mi (8,708.27 km) |
| Decatur to Provadia | 5,461.80 mi (8,789.92 km) |
| Decatur to Radnevo | 5,451.40 mi (8,773.17 km) |
| Decatur to Radomir | 5,329.82 mi (8,577.52 km) |
| Decatur to Rakitovo | 5,398.82 mi (8,688.56 km) |
| Decatur to Rakovski | 5,416.68 mi (8,717.31 km) |
| Decatur to Razgrad | 5,412.21 mi (8,710.11 km) |
| Decatur to Razlog | 5,380.64 mi (8,659.31 km) |
| Decatur to Ruse | 5,378.14 mi (8,655.28 km) |
| Decatur to Samokov | 5,362.38 mi (8,629.92 km) |
| Decatur to Sandanski | 5,388.71 mi (8,672.29 km) |
| Decatur to Sevlievo | 5,386.54 mi (8,668.80 km) |
| Decatur to Shumen | 5,439.20 mi (8,753.55 km) |
| Decatur to Silistra | 5,409.79 mi (8,706.21 km) |
| Decatur to Sliven | 5,447.15 mi (8,766.35 km) |
