| Union City to Devnya | 6,535.75 mi (10,518.28 km) |
| Union City to Dimitrovgrad | 6,567.71 mi (10,569.71 km) |
| Union City to Dobrich | 6,518.96 mi (10,491.26 km) |
| Union City to Dospat | 6,560.57 mi (10,558.22 km) |
| Union City to Dupnitsa | 6,498.44 mi (10,458.23 km) |
| Union City to Elhovo | 6,581.22 mi (10,591.46 km) |
| Union City to Etropole | 6,483.50 mi (10,434.18 km) |
| Union City to Gabrovo | 6,510.88 mi (10,478.26 km) |
| Union City to Gorna Oryahovitsa | 6,502.12 mi (10,464.16 km) |
| Union City to Gotse Delchev | 6,555.76 mi (10,550.47 km) |
| Union City to Harmanli | 6,581.55 mi (10,591.98 km) |
| Union City to Haskovo | 6,574.28 mi (10,580.28 km) |
| Union City to Ihtiman | 6,503.84 mi (10,466.93 km) |
| Union City to Isperih | 6,489.24 mi (10,443.42 km) |
| Union City to Kardzhali | 6,587.56 mi (10,601.66 km) |
