| Port Huron to Zottegem | 3,869.56 mi (6,227.46 km) |
| Port Huron to Zulte | 3,853.84 mi (6,202.16 km) |
| Port Huron to Zwevegem | 3,853.79 mi (6,202.07 km) |
| Port Huron to Zwijndrecht | 3,878.47 mi (6,241.79 km) |
| Port Huron to Asenovgrad | 5,034.32 mi (8,101.96 km) |
| Port Huron to Aytos | 5,089.93 mi (8,191.45 km) |
| Port Huron to Balchik | 5,087.79 mi (8,188.01 km) |
| Port Huron to Bankya | 4,937.19 mi (7,945.64 km) |
| Port Huron to Bansko | 4,990.63 mi (8,031.64 km) |
| Port Huron to Berkovitsa | 4,911.95 mi (7,905.02 km) |
| Port Huron to Blagoevgrad | 4,967.38 mi (7,994.23 km) |
| Port Huron to Botevgrad | 4,952.41 mi (7,970.13 km) |
| Port Huron to Burgas | 5,107.44 mi (8,219.64 km) |
| Port Huron to Byala Slatina | 4,931.63 mi (7,936.69 km) |
| Port Huron to Chirpan | 5,042.80 mi (8,115.60 km) |
