| Potomac to Zory | 4,452.83 mi (7,166.14 km) |
| Potomac to Zuromin | 4,390.38 mi (7,065.63 km) |
| Potomac to Zychlin | 4,409.33 mi (7,096.12 km) |
| Potomac to Zyrardow | 4,445.70 mi (7,154.66 km) |
| Potomac to Zywiec | 4,485.03 mi (7,217.96 km) |
| Potomac to Abrantes | 3,595.62 mi (5,786.59 km) |
| Potomac to Agualva | 3,560.12 mi (5,729.46 km) |
| Potomac to Aguas Santas | 3,530.68 mi (5,682.07 km) |
| Potomac to Agueda | 3,553.86 mi (5,719.38 km) |
| Potomac to Albergaria-a-Velha | 3,549.18 mi (5,711.85 km) |
| Potomac to Albufeira | 3,659.68 mi (5,889.68 km) |
| Potomac to Alcacer do Sal | 3,609.96 mi (5,809.67 km) |
| Potomac to Alcanena | 3,572.49 mi (5,749.36 km) |
| Potomac to Alcobaca | 3,554.90 mi (5,721.05 km) |
| Potomac to Alcochete | 3,577.11 mi (5,756.80 km) |
