| Dumbarton to Ascoli Piceno | 1,211.31 mi (1,949.41 km) |
| Dumbarton to Asola | 986.77 mi (1,588.05 km) |
| Dumbarton to Asolo | 999.33 mi (1,608.27 km) |
| Dumbarton to Assemini | 1,308.17 mi (2,105.29 km) |
| Dumbarton to Assisi | 1,170.52 mi (1,883.78 km) |
| Dumbarton to Asti | 944.98 mi (1,520.80 km) |
| Dumbarton to Atessa | 1,281.00 mi (2,061.57 km) |
| Dumbarton to Atri | 1,238.09 mi (1,992.51 km) |
| Dumbarton to Atripalda | 1,357.60 mi (2,184.85 km) |
| Dumbarton to Augusta | 1,585.09 mi (2,550.95 km) |
| Dumbarton to Aulla | 1,031.22 mi (1,659.58 km) |
| Dumbarton to Aurisina | 1,060.35 mi (1,706.46 km) |
| Dumbarton to Avellino | 1,356.54 mi (2,183.15 km) |
| Dumbarton to Aversa | 1,336.81 mi (2,151.39 km) |
| Dumbarton to Avezzano | 1,253.17 mi (2,016.79 km) |
