| Castel Gandolfo to Amelia | 56.78 mi (91.38 km) |
| Castel Gandolfo to Anagni | 26.11 mi (42.02 km) |
| Castel Gandolfo to Ancona | 136.46 mi (219.62 km) |
| Castel Gandolfo to Andria | 192.34 mi (309.54 km) |
| Castel Gandolfo to Angri | 121.66 mi (195.79 km) |
| Castel Gandolfo to Anguillara Sabazia | 30.54 mi (49.14 km) |
| Castel Gandolfo to Anzio | 20.74 mi (33.38 km) |
| Castel Gandolfo to Anzola dell'Emilia | 206.93 mi (333.02 km) |
| Castel Gandolfo to Aosta | 382.96 mi (616.32 km) |
| Castel Gandolfo to Apricena | 143.36 mi (230.71 km) |
| Castel Gandolfo to Aprilia | 11.30 mi (18.19 km) |
| Castel Gandolfo to Aradeo | 306.97 mi (494.03 km) |
| Castel Gandolfo to Aragona | 304.58 mi (490.18 km) |
| Castel Gandolfo to Arco | 301.27 mi (484.84 km) |
| Castel Gandolfo to Arcola | 214.89 mi (345.83 km) |
