| Castano Primo to Devnya | 939.96 mi (1,512.73 km) |
| Castano Primo to Dimitrovgrad | 871.73 mi (1,402.91 km) |
| Castano Primo to Dobrich | 946.32 mi (1,522.96 km) |
| Castano Primo to Dospat | 814.74 mi (1,311.19 km) |
| Castano Primo to Dupnitsa | 748.39 mi (1,204.42 km) |
| Castano Primo to Elhovo | 914.96 mi (1,472.48 km) |
| Castano Primo to Etropole | 776.35 mi (1,249.41 km) |
| Castano Primo to Gabrovo | 839.53 mi (1,351.10 km) |
| Castano Primo to Gorna Oryahovitsa | 851.55 mi (1,370.43 km) |
| Castano Primo to Gotse Delchev | 796.84 mi (1,282.39 km) |
| Castano Primo to Harmanli | 889.03 mi (1,430.76 km) |
| Castano Primo to Haskovo | 873.17 mi (1,405.23 km) |
| Castano Primo to Ihtiman | 777.04 mi (1,250.52 km) |
| Castano Primo to Isperih | 895.33 mi (1,440.90 km) |
| Castano Primo to Kardzhali | 871.32 mi (1,402.25 km) |
