| Hackettstown to Devnya | 4,888.61 mi (7,867.46 km) |
| Hackettstown to Dimitrovgrad | 4,859.82 mi (7,821.12 km) |
| Hackettstown to Dobrich | 4,884.02 mi (7,860.07 km) |
| Hackettstown to Dospat | 4,818.13 mi (7,754.04 km) |
| Hackettstown to Dupnitsa | 4,749.55 mi (7,643.67 km) |
| Hackettstown to Elhovo | 4,893.87 mi (7,875.92 km) |
| Hackettstown to Etropole | 4,762.13 mi (7,663.90 km) |
| Hackettstown to Gabrovo | 4,814.59 mi (7,748.34 km) |
| Hackettstown to Gorna Oryahovitsa | 4,818.08 mi (7,753.95 km) |
| Hackettstown to Gotse Delchev | 4,803.75 mi (7,730.89 km) |
| Hackettstown to Harmanli | 4,876.92 mi (7,848.65 km) |
| Hackettstown to Haskovo | 4,863.41 mi (7,826.90 km) |
| Hackettstown to Ihtiman | 4,771.03 mi (7,678.23 km) |
| Hackettstown to Isperih | 4,838.34 mi (7,786.56 km) |
| Hackettstown to Kardzhali | 4,867.27 mi (7,833.12 km) |
