| Prospect Heights to Devnya | 5,314.31 mi (8,552.56 km) |
| Prospect Heights to Dimitrovgrad | 5,303.10 mi (8,534.51 km) |
| Prospect Heights to Dobrich | 5,305.93 mi (8,539.07 km) |
| Prospect Heights to Dospat | 5,270.87 mi (8,482.64 km) |
| Prospect Heights to Dupnitsa | 5,202.69 mi (8,372.92 km) |
| Prospect Heights to Elhovo | 5,331.78 mi (8,580.67 km) |
| Prospect Heights to Etropole | 5,207.20 mi (8,380.18 km) |
| Prospect Heights to Gabrovo | 5,253.31 mi (8,454.39 km) |
| Prospect Heights to Gorna Oryahovitsa | 5,253.18 mi (8,454.18 km) |
| Prospect Heights to Gotse Delchev | 5,259.05 mi (8,463.63 km) |
| Prospect Heights to Harmanli | 5,319.63 mi (8,561.11 km) |
| Prospect Heights to Haskovo | 5,307.67 mi (8,541.87 km) |
| Prospect Heights to Ihtiman | 5,219.78 mi (8,400.43 km) |
| Prospect Heights to Isperih | 5,263.93 mi (8,471.47 km) |
| Prospect Heights to Kardzhali | 5,314.46 mi (8,552.80 km) |
