| Greenock to Devnya | 1,671.82 mi (2,690.53 km) |
| Greenock to Dimitrovgrad | 1,656.91 mi (2,666.54 km) |
| Greenock to Dobrich | 1,665.24 mi (2,679.95 km) |
| Greenock to Dospat | 1,626.27 mi (2,617.22 km) |
| Greenock to Dupnitsa | 1,558.48 mi (2,508.13 km) |
| Greenock to Elhovo | 1,685.88 mi (2,713.15 km) |
| Greenock to Etropole | 1,561.19 mi (2,512.49 km) |
| Greenock to Gabrovo | 1,607.25 mi (2,586.62 km) |
| Greenock to Gorna Oryahovitsa | 1,607.61 mi (2,587.20 km) |
| Greenock to Gotse Delchev | 1,615.38 mi (2,599.70 km) |
| Greenock to Harmanli | 1,673.42 mi (2,693.12 km) |
| Greenock to Haskovo | 1,661.52 mi (2,673.95 km) |
| Greenock to Ihtiman | 1,574.32 mi (2,533.62 km) |
| Greenock to Isperih | 1,621.36 mi (2,609.33 km) |
| Greenock to Kardzhali | 1,668.56 mi (2,685.29 km) |
