| Castro Valley to Zottegem | 5,494.15 mi (8,841.98 km) |
| Castro Valley to Zulte | 5,481.09 mi (8,820.95 km) |
| Castro Valley to Zwevegem | 5,484.31 mi (8,826.15 km) |
| Castro Valley to Zwijndrecht | 5,490.82 mi (8,836.63 km) |
| Castro Valley to Asenovgrad | 6,547.93 mi (10,537.87 km) |
| Castro Valley to Aytos | 6,556.09 mi (10,551.00 km) |
| Castro Valley to Balchik | 6,528.44 mi (10,506.52 km) |
| Castro Valley to Bankya | 6,466.41 mi (10,406.68 km) |
| Castro Valley to Bansko | 6,527.73 mi (10,505.37 km) |
| Castro Valley to Berkovitsa | 6,433.17 mi (10,353.18 km) |
| Castro Valley to Blagoevgrad | 6,507.79 mi (10,473.27 km) |
| Castro Valley to Botevgrad | 6,468.63 mi (10,410.25 km) |
| Castro Valley to Burgas | 6,573.06 mi (10,578.32 km) |
| Castro Valley to Byala Slatina | 6,437.12 mi (10,359.54 km) |
| Castro Valley to Chirpan | 6,546.61 mi (10,535.75 km) |
