| Silver Spring to Devnya | 5,060.56 mi (8,144.18 km) |
| Silver Spring to Dimitrovgrad | 5,031.08 mi (8,096.73 km) |
| Silver Spring to Dobrich | 5,056.09 mi (8,136.99 km) |
| Silver Spring to Dospat | 4,988.95 mi (8,028.94 km) |
| Silver Spring to Dupnitsa | 4,920.38 mi (7,918.59 km) |
| Silver Spring to Elhovo | 5,065.35 mi (8,151.89 km) |
| Silver Spring to Etropole | 4,933.35 mi (7,939.45 km) |
| Silver Spring to Gabrovo | 4,986.07 mi (8,024.31 km) |
| Silver Spring to Gorna Oryahovitsa | 4,989.71 mi (8,030.16 km) |
| Silver Spring to Gotse Delchev | 4,974.44 mi (8,005.58 km) |
| Silver Spring to Harmanli | 5,048.20 mi (8,124.30 km) |
| Silver Spring to Haskovo | 5,034.62 mi (8,102.44 km) |
| Silver Spring to Ihtiman | 4,942.07 mi (7,953.50 km) |
| Silver Spring to Isperih | 5,010.31 mi (8,063.32 km) |
| Silver Spring to Kardzhali | 5,038.35 mi (8,108.44 km) |
