| Port Huron to Arcore | 4,273.73 mi (6,877.91 km) |
| Port Huron to Ardea | 4,566.67 mi (7,349.35 km) |
| Port Huron to Arenzano | 4,295.60 mi (6,913.10 km) |
| Port Huron to Arese | 4,266.92 mi (6,866.94 km) |
| Port Huron to Arezzo | 4,463.09 mi (7,182.65 km) |
| Port Huron to Argelato | 4,396.79 mi (7,075.95 km) |
| Port Huron to Argenta | 4,414.60 mi (7,104.62 km) |
| Port Huron to Ariano Irpino | 4,690.30 mi (7,548.32 km) |
| Port Huron to Ariccia | 4,567.30 mi (7,350.36 km) |
| Port Huron to Arluno | 4,263.48 mi (6,861.41 km) |
| Port Huron to Arona | 4,238.63 mi (6,821.41 km) |
| Port Huron to Artena | 4,576.88 mi (7,365.77 km) |
| Port Huron to Arzachena | 4,456.59 mi (7,172.18 km) |
| Port Huron to Arzano | 4,666.80 mi (7,510.49 km) |
| Port Huron to Arzignano | 4,358.66 mi (7,014.59 km) |
