| Hilliard to Devnya | 5,246.60 mi (8,443.59 km) |
| Hilliard to Dimitrovgrad | 5,226.20 mi (8,410.76 km) |
| Hilliard to Dobrich | 5,240.15 mi (8,433.20 km) |
| Hilliard to Dospat | 5,188.91 mi (8,350.74 km) |
| Hilliard to Dupnitsa | 5,120.36 mi (8,240.42 km) |
| Hilliard to Elhovo | 5,257.77 mi (8,461.56 km) |
| Hilliard to Etropole | 5,129.14 mi (8,254.55 km) |
| Hilliard to Gabrovo | 5,178.69 mi (8,334.30 km) |
| Hilliard to Gorna Oryahovitsa | 5,180.44 mi (8,337.12 km) |
| Hilliard to Gotse Delchev | 5,175.70 mi (8,329.49 km) |
| Hilliard to Harmanli | 5,243.07 mi (8,437.91 km) |
| Hilliard to Haskovo | 5,230.27 mi (8,417.31 km) |
| Hilliard to Ihtiman | 5,139.81 mi (8,271.73 km) |
| Hilliard to Isperih | 5,196.15 mi (8,362.39 km) |
| Hilliard to Kardzhali | 5,235.54 mi (8,425.78 km) |
