| South Houston to Zottegem | 5,021.33 mi (8,081.05 km) |
| South Houston to Zulte | 5,005.44 mi (8,055.48 km) |
| South Houston to Zwevegem | 5,005.01 mi (8,054.78 km) |
| South Houston to Zwijndrecht | 5,031.49 mi (8,097.41 km) |
| South Houston to Asenovgrad | 6,188.66 mi (9,959.69 km) |
| South Houston to Aytos | 6,247.40 mi (10,054.22 km) |
| South Houston to Balchik | 6,246.61 mi (10,052.94 km) |
| South Houston to Bankya | 6,090.77 mi (9,802.15 km) |
| South Houston to Bansko | 6,143.08 mi (9,886.34 km) |
| South Houston to Berkovitsa | 6,066.41 mi (9,762.94 km) |
| South Houston to Blagoevgrad | 6,119.68 mi (9,848.68 km) |
| South Houston to Botevgrad | 6,107.04 mi (9,828.33 km) |
| South Houston to Burgas | 6,264.87 mi (10,082.34 km) |
| South Houston to Byala Slatina | 6,087.25 mi (9,796.48 km) |
| South Houston to Chirpan | 6,197.89 mi (9,974.55 km) |
