| Castro Valley to Amelia | 6,197.55 mi (9,973.99 km) |
| Castro Valley to Anagni | 6,265.06 mi (10,082.64 km) |
| Castro Valley to Ancona | 6,167.47 mi (9,925.58 km) |
| Castro Valley to Andria | 6,383.69 mi (10,273.55 km) |
| Castro Valley to Angri | 6,363.54 mi (10,241.12 km) |
| Castro Valley to Anguillara Sabazia | 6,219.82 mi (10,009.83 km) |
| Castro Valley to Anzio | 6,266.62 mi (10,085.15 km) |
| Castro Valley to Anzola dell'Emilia | 6,049.33 mi (9,735.46 km) |
| Castro Valley to Aosta | 5,870.96 mi (9,448.40 km) |
| Castro Valley to Apricena | 6,327.68 mi (10,183.41 km) |
| Castro Valley to Aprilia | 6,259.47 mi (10,073.65 km) |
| Castro Valley to Aradeo | 6,497.42 mi (10,456.59 km) |
| Castro Valley to Aragona | 6,528.00 mi (10,505.80 km) |
| Castro Valley to Arco | 5,963.36 mi (9,597.10 km) |
| Castro Valley to Arcola | 6,036.19 mi (9,714.30 km) |
