| Willow Grove to Devnya | 4,932.34 mi (7,937.83 km) |
| Willow Grove to Dimitrovgrad | 4,902.63 mi (7,890.01 km) |
| Willow Grove to Dobrich | 4,927.94 mi (7,930.75 km) |
| Willow Grove to Dospat | 4,860.43 mi (7,822.11 km) |
| Willow Grove to Dupnitsa | 4,791.87 mi (7,711.77 km) |
| Willow Grove to Elhovo | 4,936.95 mi (7,945.26 km) |
| Willow Grove to Etropole | 4,804.89 mi (7,732.72 km) |
| Willow Grove to Gabrovo | 4,857.68 mi (7,817.68 km) |
| Willow Grove to Gorna Oryahovitsa | 4,861.35 mi (7,823.59 km) |
| Willow Grove to Gotse Delchev | 4,845.91 mi (7,798.74 km) |
| Willow Grove to Harmanli | 4,919.76 mi (7,917.59 km) |
| Willow Grove to Haskovo | 4,906.16 mi (7,895.71 km) |
| Willow Grove to Ihtiman | 4,813.59 mi (7,746.72 km) |
| Willow Grove to Isperih | 4,882.10 mi (7,856.98 km) |
| Willow Grove to Kardzhali | 4,909.86 mi (7,901.66 km) |
