| Portland to Zirndorf | 5,306.70 mi (8,540.31 km) |
| Portland to Zittau | 5,306.42 mi (8,539.86 km) |
| Portland to Zorbig | 5,205.12 mi (8,376.83 km) |
| Portland to Zorneding | 5,408.35 mi (8,703.89 km) |
| Portland to Zossen | 5,198.28 mi (8,365.83 km) |
| Portland to Zschopau | 5,277.60 mi (8,493.48 km) |
| Portland to Zulpich | 5,130.78 mi (8,257.20 km) |
| Portland to Zweibrucken | 5,231.68 mi (8,419.57 km) |
| Portland to Zwenkau | 5,233.38 mi (8,422.32 km) |
| Portland to Zwickau | 5,267.05 mi (8,476.50 km) |
| Portland to Zwiesel | 5,384.97 mi (8,666.27 km) |
| Portland to Zwonitz | 5,279.67 mi (8,496.80 km) |
| Portland to Acharnes | 6,293.26 mi (10,128.03 km) |
| Portland to Agia Paraskevi | 6,299.65 mi (10,138.31 km) |
| Portland to Agia Varvara | 6,296.81 mi (10,133.73 km) |
