| Delaware to Devnya | 5,231.22 mi (8,418.84 km) |
| Delaware to Dimitrovgrad | 5,211.13 mi (8,386.50 km) |
| Delaware to Dobrich | 5,224.71 mi (8,408.35 km) |
| Delaware to Dospat | 5,174.01 mi (8,326.76 km) |
| Delaware to Dupnitsa | 5,105.47 mi (8,216.46 km) |
| Delaware to Elhovo | 5,242.60 mi (8,437.14 km) |
| Delaware to Etropole | 5,114.10 mi (8,230.34 km) |
| Delaware to Gabrovo | 5,163.53 mi (8,309.91 km) |
| Delaware to Gorna Oryahovitsa | 5,165.23 mi (8,312.63 km) |
| Delaware to Gotse Delchev | 5,160.85 mi (8,305.59 km) |
| Delaware to Harmanli | 5,227.99 mi (8,413.64 km) |
| Delaware to Haskovo | 5,215.22 mi (8,393.08 km) |
| Delaware to Ihtiman | 5,124.84 mi (8,247.63 km) |
| Delaware to Isperih | 5,180.77 mi (8,337.64 km) |
| Delaware to Kardzhali | 5,220.53 mi (8,401.64 km) |
