| Port Huron to Amelia | 4,522.46 mi (7,278.19 km) |
| Port Huron to Anagni | 4,586.41 mi (7,381.11 km) |
| Port Huron to Ancona | 4,522.73 mi (7,278.63 km) |
| Port Huron to Andria | 4,736.65 mi (7,622.91 km) |
| Port Huron to Angri | 4,686.96 mi (7,542.94 km) |
| Port Huron to Anguillara Sabazia | 4,535.63 mi (7,299.39 km) |
| Port Huron to Anzio | 4,576.98 mi (7,365.94 km) |
| Port Huron to Anzola dell'Emilia | 4,391.79 mi (7,067.91 km) |
| Port Huron to Aosta | 4,189.37 mi (6,742.14 km) |
| Port Huron to Apricena | 4,677.89 mi (7,528.33 km) |
| Port Huron to Aprilia | 4,572.19 mi (7,358.22 km) |
| Port Huron to Aradeo | 4,858.38 mi (7,818.81 km) |
| Port Huron to Aragona | 4,791.08 mi (7,710.50 km) |
| Port Huron to Arco | 4,325.05 mi (6,960.50 km) |
| Port Huron to Arcola | 4,356.56 mi (7,011.20 km) |
