| Gretna to Zottegem | 4,802.70 mi (7,729.20 km) |
| Gretna to Zulte | 4,786.61 mi (7,703.30 km) |
| Gretna to Zwevegem | 4,785.63 mi (7,701.73 km) |
| Gretna to Zwijndrecht | 4,814.73 mi (7,748.56 km) |
| Gretna to Asenovgrad | 5,971.08 mi (9,609.52 km) |
| Gretna to Aytos | 6,036.35 mi (9,714.57 km) |
| Gretna to Balchik | 6,039.52 mi (9,719.66 km) |
| Gretna to Bankya | 5,872.12 mi (9,450.26 km) |
| Gretna to Bansko | 5,922.47 mi (9,531.30 km) |
| Gretna to Berkovitsa | 5,849.34 mi (9,413.61 km) |
| Gretna to Blagoevgrad | 5,898.88 mi (9,493.33 km) |
| Gretna to Botevgrad | 5,890.19 mi (9,479.34 km) |
| Gretna to Burgas | 6,053.66 mi (9,742.42 km) |
| Gretna to Byala Slatina | 5,872.35 mi (9,450.63 km) |
| Gretna to Chirpan | 5,981.70 mi (9,626.62 km) |
