| Castel Gandolfo to Trim | 1,211.18 mi (1,949.20 km) |
| Castel Gandolfo to Tuam | 1,280.97 mi (2,061.52 km) |
| Castel Gandolfo to Tullamore | 1,224.55 mi (1,970.72 km) |
| Castel Gandolfo to Waterford | 1,174.99 mi (1,890.97 km) |
| Castel Gandolfo to Wexford | 1,153.43 mi (1,856.27 km) |
| Castel Gandolfo to Wicklow | 1,162.78 mi (1,871.31 km) |
| Castel Gandolfo to Abano Terme | 253.36 mi (407.74 km) |
| Castel Gandolfo to Abbiategrasso | 314.03 mi (505.39 km) |
| Castel Gandolfo to Acate | 340.15 mi (547.41 km) |
| Castel Gandolfo to Acerra | 104.60 mi (168.34 km) |
| Castel Gandolfo to Aci Castello | 318.49 mi (512.57 km) |
| Castel Gandolfo to Aci Catena | 315.41 mi (507.61 km) |
| Castel Gandolfo to Aci Sant'Antonio | 315.04 mi (507.02 km) |
| Castel Gandolfo to Acireale | 315.11 mi (507.12 km) |
| Castel Gandolfo to Acquaviva delle Fonti | 225.53 mi (362.95 km) |
