| Risca to Devnya | 1,532.15 mi (2,465.75 km) |
| Risca to Dimitrovgrad | 1,495.41 mi (2,406.63 km) |
| Risca to Dobrich | 1,530.41 mi (2,462.96 km) |
| Risca to Dospat | 1,452.90 mi (2,338.22 km) |
| Risca to Dupnitsa | 1,384.31 mi (2,227.84 km) |
| Risca to Elhovo | 1,530.92 mi (2,463.78 km) |
| Risca to Etropole | 1,397.57 mi (2,249.18 km) |
| Risca to Gabrovo | 1,451.73 mi (2,336.33 km) |
| Risca to Gorna Oryahovitsa | 1,456.74 mi (2,344.40 km) |
| Risca to Gotse Delchev | 1,438.73 mi (2,315.41 km) |
| Risca to Harmanli | 1,512.61 mi (2,434.31 km) |
| Risca to Haskovo | 1,498.79 mi (2,412.07 km) |
| Risca to Ihtiman | 1,405.91 mi (2,262.59 km) |
| Risca to Isperih | 1,482.56 mi (2,385.95 km) |
| Risca to Kardzhali | 1,502.21 mi (2,417.57 km) |
