| Os to Ascoli Piceno | 1,247.96 mi (2,008.39 km) |
| Os to Asola | 1,056.79 mi (1,700.74 km) |
| Os to Asolo | 1,030.95 mi (1,659.15 km) |
| Os to Assemini | 1,455.09 mi (2,341.74 km) |
| Os to Assisi | 1,222.24 mi (1,967.00 km) |
| Os to Asti | 1,064.95 mi (1,713.88 km) |
| Os to Atessa | 1,310.85 mi (2,109.62 km) |
| Os to Atri | 1,270.55 mi (2,044.75 km) |
| Os to Atripalda | 1,392.65 mi (2,241.26 km) |
| Os to Augusta | 1,644.38 mi (2,646.38 km) |
| Os to Aulla | 1,121.77 mi (1,805.32 km) |
| Os to Aurisina | 1,056.97 mi (1,701.03 km) |
| Os to Avellino | 1,392.21 mi (2,240.54 km) |
| Os to Aversa | 1,381.87 mi (2,223.91 km) |
| Os to Avezzano | 1,300.88 mi (2,093.56 km) |
