| Orbetello to Alfena | 1,017.11 mi (1,636.88 km) |
| Orbetello to Alijo | 963.07 mi (1,549.91 km) |
| Orbetello to Aljustrel | 1,066.94 mi (1,717.08 km) |
| Orbetello to Almada | 1,097.47 mi (1,766.21 km) |
| Orbetello to Almargem | 1,099.27 mi (1,769.10 km) |
| Orbetello to Almeirim | 1,058.09 mi (1,702.84 km) |
| Orbetello to Amadora | 1,100.01 mi (1,770.30 km) |
| Orbetello to Amarante | 993.35 mi (1,598.65 km) |
| Orbetello to Amares | 1,002.55 mi (1,613.45 km) |
| Orbetello to Amora | 1,096.76 mi (1,765.07 km) |
| Orbetello to Anadia | 1,024.67 mi (1,649.05 km) |
| Orbetello to Angra do Heroismo | 2,016.99 mi (3,246.03 km) |
| Orbetello to Ansiao | 1,034.01 mi (1,664.07 km) |
| Orbetello to Anta | 1,025.42 mi (1,650.25 km) |
| Orbetello to Arcos de Valdevez | 1,004.30 mi (1,616.27 km) |
