| Os to Arcore | 1,020.50 mi (1,642.34 km) |
| Os to Ardea | 1,320.45 mi (2,125.06 km) |
| Os to Arenzano | 1,101.27 mi (1,772.32 km) |
| Os to Arese | 1,024.69 mi (1,649.08 km) |
| Os to Arezzo | 1,188.72 mi (1,913.06 km) |
| Os to Argelato | 1,108.30 mi (1,783.64 km) |
| Os to Argenta | 1,110.18 mi (1,786.67 km) |
| Os to Ariano Irpino | 1,380.08 mi (2,221.03 km) |
| Os to Ariccia | 1,314.80 mi (2,115.97 km) |
| Os to Arluno | 1,027.35 mi (1,653.36 km) |
| Os to Arona | 1,007.70 mi (1,621.74 km) |
| Os to Artena | 1,316.17 mi (2,118.18 km) |
| Os to Arzachena | 1,333.16 mi (2,145.51 km) |
| Os to Arzano | 1,386.01 mi (2,230.57 km) |
| Os to Arzignano | 1,044.32 mi (1,680.68 km) |
