| Norristown to Devnya | 4,942.26 mi (7,953.80 km) |
| Norristown to Dimitrovgrad | 4,912.76 mi (7,906.32 km) |
| Norristown to Dobrich | 4,937.81 mi (7,946.64 km) |
| Norristown to Dospat | 4,870.68 mi (7,838.60 km) |
| Norristown to Dupnitsa | 4,802.11 mi (7,728.25 km) |
| Norristown to Elhovo | 4,947.02 mi (7,961.47 km) |
| Norristown to Etropole | 4,815.03 mi (7,749.05 km) |
| Norristown to Gabrovo | 4,867.75 mi (7,833.89 km) |
| Norristown to Gorna Oryahovitsa | 4,871.38 mi (7,839.73 km) |
| Norristown to Gotse Delchev | 4,856.18 mi (7,815.27 km) |
| Norristown to Harmanli | 4,929.89 mi (7,933.89 km) |
| Norristown to Haskovo | 4,916.31 mi (7,912.04 km) |
| Norristown to Ihtiman | 4,823.78 mi (7,763.12 km) |
| Norristown to Isperih | 4,892.02 mi (7,872.94 km) |
| Norristown to Kardzhali | 4,920.05 mi (7,918.05 km) |
