| Castelfidardo to Devnya | 703.92 mi (1,132.85 km) |
| Castelfidardo to Dimitrovgrad | 618.69 mi (995.69 km) |
| Castelfidardo to Dobrich | 715.02 mi (1,150.72 km) |
| Castelfidardo to Dospat | 554.45 mi (892.30 km) |
| Castelfidardo to Dupnitsa | 491.51 mi (791.02 km) |
| Castelfidardo to Elhovo | 665.28 mi (1,070.67 km) |
| Castelfidardo to Etropole | 528.42 mi (850.41 km) |
| Castelfidardo to Gabrovo | 594.95 mi (957.48 km) |
| Castelfidardo to Gorna Oryahovitsa | 611.05 mi (983.38 km) |
| Castelfidardo to Gotse Delchev | 534.74 mi (860.58 km) |
| Castelfidardo to Harmanli | 635.55 mi (1,022.82 km) |
| Castelfidardo to Haskovo | 618.92 mi (996.05 km) |
| Castelfidardo to Ihtiman | 523.87 mi (843.08 km) |
| Castelfidardo to Isperih | 664.45 mi (1,069.33 km) |
| Castelfidardo to Kardzhali | 613.96 mi (988.07 km) |
