| Harpenden to Zottegem | 190.85 mi (307.14 km) |
| Harpenden to Zulte | 174.74 mi (281.21 km) |
| Harpenden to Zwevegem | 174.00 mi (280.02 km) |
| Harpenden to Zwijndrecht | 205.66 mi (330.97 km) |
| Harpenden to Asenovgrad | 1,359.26 mi (2,187.52 km) |
| Harpenden to Aytos | 1,427.82 mi (2,297.86 km) |
| Harpenden to Balchik | 1,436.99 mi (2,312.62 km) |
| Harpenden to Bankya | 1,260.55 mi (2,028.66 km) |
| Harpenden to Bansko | 1,312.12 mi (2,111.66 km) |
| Harpenden to Berkovitsa | 1,237.47 mi (1,991.52 km) |
| Harpenden to Blagoevgrad | 1,288.69 mi (2,073.95 km) |
| Harpenden to Botevgrad | 1,278.32 mi (2,057.25 km) |
| Harpenden to Burgas | 1,444.88 mi (2,325.31 km) |
| Harpenden to Byala Slatina | 1,261.01 mi (2,029.40 km) |
| Harpenden to Chirpan | 1,369.88 mi (2,204.61 km) |
