| Port Huron to Ascoli Piceno | 4,557.32 mi (7,334.30 km) |
| Port Huron to Asola | 4,334.01 mi (6,974.92 km) |
| Port Huron to Asolo | 4,370.43 mi (7,033.53 km) |
| Port Huron to Assemini | 4,513.62 mi (7,263.97 km) |
| Port Huron to Assisi | 4,508.91 mi (7,256.39 km) |
| Port Huron to Asti | 4,257.15 mi (6,851.22 km) |
| Port Huron to Atessa | 4,625.33 mi (7,443.75 km) |
| Port Huron to Atri | 4,584.64 mi (7,378.27 km) |
| Port Huron to Atripalda | 4,689.70 mi (7,547.35 km) |
| Port Huron to Augusta | 4,865.67 mi (7,830.53 km) |
| Port Huron to Aulla | 4,355.31 mi (7,009.20 km) |
| Port Huron to Aurisina | 4,444.87 mi (7,153.32 km) |
| Port Huron to Avellino | 4,688.20 mi (7,544.93 km) |
| Port Huron to Aversa | 4,661.93 mi (7,502.65 km) |
| Port Huron to Avezzano | 4,585.37 mi (7,379.43 km) |
