| Castel Gandolfo to Montana | 549.47 mi (884.28 km) |
| Castel Gandolfo to Nova Zagora | 686.04 mi (1,104.08 km) |
| Castel Gandolfo to Novi Iskar | 551.38 mi (887.35 km) |
| Castel Gandolfo to Novi Pazar | 747.77 mi (1,203.42 km) |
| Castel Gandolfo to Omurtag | 707.44 mi (1,138.52 km) |
| Castel Gandolfo to Panagyurishte | 592.77 mi (953.97 km) |
| Castel Gandolfo to Parvomay | 645.81 mi (1,039.33 km) |
| Castel Gandolfo to Pavlikeni | 653.03 mi (1,050.95 km) |
| Castel Gandolfo to Pazardzhik | 600.39 mi (966.24 km) |
| Castel Gandolfo to Pernik | 534.51 mi (860.20 km) |
| Castel Gandolfo to Peshtera | 598.98 mi (963.97 km) |
| Castel Gandolfo to Petrich | 545.80 mi (878.37 km) |
| Castel Gandolfo to Pleven | 619.07 mi (996.30 km) |
| Castel Gandolfo to Plovdiv | 621.80 mi (1,000.69 km) |
| Castel Gandolfo to Pomorie | 767.58 mi (1,235.29 km) |
