| Castricum to Amelia | 778.70 mi (1,253.20 km) |
| Castricum to Anagni | 845.33 mi (1,360.43 km) |
| Castricum to Ancona | 738.95 mi (1,189.22 km) |
| Castricum to Andria | 953.98 mi (1,535.28 km) |
| Castricum to Angri | 939.91 mi (1,512.64 km) |
| Castricum to Anguillara Sabazia | 805.00 mi (1,295.52 km) |
| Castricum to Anzio | 852.73 mi (1,372.34 km) |
| Castricum to Anzola dell'Emilia | 627.82 mi (1,010.38 km) |
| Castricum to Aosta | 485.89 mi (781.97 km) |
| Castricum to Apricena | 898.43 mi (1,445.88 km) |
| Castricum to Aprilia | 844.55 mi (1,359.17 km) |
| Castricum to Aradeo | 1,068.02 mi (1,718.81 km) |
| Castricum to Aragona | 1,132.34 mi (1,822.33 km) |
| Castricum to Arco | 536.87 mi (864.01 km) |
| Castricum to Arcola | 629.91 mi (1,013.74 km) |
