| Radviliskis to Devnya | 887.52 mi (1,428.33 km) |
| Radviliskis to Dimitrovgrad | 954.47 mi (1,536.07 km) |
| Radviliskis to Dobrich | 866.23 mi (1,394.07 km) |
| Radviliskis to Dospat | 978.06 mi (1,574.04 km) |
| Radviliskis to Dupnitsa | 935.38 mi (1,505.34 km) |
| Radviliskis to Elhovo | 951.62 mi (1,531.48 km) |
| Radviliskis to Etropole | 896.14 mi (1,442.19 km) |
| Radviliskis to Gabrovo | 897.13 mi (1,443.79 km) |
| Radviliskis to Gorna Oryahovitsa | 880.38 mi (1,416.84 km) |
| Radviliskis to Gotse Delchev | 983.46 mi (1,582.73 km) |
| Radviliskis to Harmanli | 963.89 mi (1,551.23 km) |
| Radviliskis to Haskovo | 962.36 mi (1,548.78 km) |
| Radviliskis to Ihtiman | 923.34 mi (1,485.98 km) |
| Radviliskis to Isperih | 847.39 mi (1,363.75 km) |
| Radviliskis to Kardzhali | 981.08 mi (1,578.90 km) |
