| Colwyn Bay to Devnya | 1,580.93 mi (2,544.26 km) |
| Colwyn Bay to Dimitrovgrad | 1,553.00 mi (2,499.32 km) |
| Colwyn Bay to Dobrich | 1,577.22 mi (2,538.28 km) |
| Colwyn Bay to Dospat | 1,515.24 mi (2,438.54 km) |
| Colwyn Bay to Dupnitsa | 1,446.73 mi (2,328.29 km) |
| Colwyn Bay to Elhovo | 1,585.95 mi (2,552.34 km) |
| Colwyn Bay to Etropole | 1,455.67 mi (2,342.68 km) |
| Colwyn Bay to Gabrovo | 1,506.70 mi (2,424.80 km) |
| Colwyn Bay to Gorna Oryahovitsa | 1,509.82 mi (2,429.82 km) |
| Colwyn Bay to Gotse Delchev | 1,502.38 mi (2,417.84 km) |
| Colwyn Bay to Harmanli | 1,569.98 mi (2,526.64 km) |
| Colwyn Bay to Haskovo | 1,556.90 mi (2,505.59 km) |
| Colwyn Bay to Ihtiman | 1,466.02 mi (2,359.33 km) |
| Colwyn Bay to Isperih | 1,530.80 mi (2,463.58 km) |
| Colwyn Bay to Kardzhali | 1,561.82 mi (2,513.51 km) |
