| Potomac to Zirndorf | 4,169.85 mi (6,710.73 km) |
| Potomac to Zittau | 4,275.19 mi (6,880.26 km) |
| Potomac to Zorbig | 4,148.98 mi (6,677.14 km) |
| Potomac to Zorneding | 4,248.88 mi (6,837.90 km) |
| Potomac to Zossen | 4,181.28 mi (6,729.12 km) |
| Potomac to Zschopau | 4,212.70 mi (6,779.68 km) |
| Potomac to Zulpich | 3,960.59 mi (6,373.95 km) |
| Potomac to Zweibrucken | 4,030.47 mi (6,486.42 km) |
| Potomac to Zwenkau | 4,169.27 mi (6,709.79 km) |
| Potomac to Zwickau | 4,191.69 mi (6,745.88 km) |
| Potomac to Zwiesel | 4,275.06 mi (6,880.05 km) |
| Potomac to Zwonitz | 4,206.54 mi (6,769.77 km) |
| Potomac to Acharnes | 5,126.43 mi (8,250.20 km) |
| Potomac to Agia Paraskevi | 5,133.19 mi (8,261.07 km) |
| Potomac to Agia Varvara | 5,126.35 mi (8,250.06 km) |
