| Castle Rock to Zottegem | 4,861.61 mi (7,824.00 km) |
| Castle Rock to Zulte | 4,846.99 mi (7,800.48 km) |
| Castle Rock to Zwevegem | 4,848.63 mi (7,803.11 km) |
| Castle Rock to Zwijndrecht | 4,864.35 mi (7,828.41 km) |
| Castle Rock to Asenovgrad | 5,990.08 mi (9,640.10 km) |
| Castle Rock to Aytos | 6,022.97 mi (9,693.03 km) |
| Castle Rock to Balchik | 6,007.94 mi (9,668.85 km) |
| Castle Rock to Bankya | 5,899.03 mi (9,493.57 km) |
| Castle Rock to Bansko | 5,957.30 mi (9,587.35 km) |
| Castle Rock to Berkovitsa | 5,869.36 mi (9,445.82 km) |
| Castle Rock to Blagoevgrad | 5,935.30 mi (9,551.94 km) |
| Castle Rock to Botevgrad | 5,908.03 mi (9,508.06 km) |
| Castle Rock to Burgas | 6,040.54 mi (9,721.31 km) |
| Castle Rock to Byala Slatina | 5,881.52 mi (9,465.39 km) |
| Castle Rock to Chirpan | 5,993.82 mi (9,646.12 km) |
