| North Potomac to Ilawa | 4,357.30 mi (7,012.39 km) |
| North Potomac to Imielin | 4,467.08 mi (7,189.07 km) |
| North Potomac to Inowroclaw | 4,338.20 mi (6,981.66 km) |
| North Potomac to Janow Lubelski | 4,564.62 mi (7,346.05 km) |
| North Potomac to Jarocin | 4,338.54 mi (6,982.20 km) |
| North Potomac to Jaroslaw | 4,600.83 mi (7,404.33 km) |
| North Potomac to Jasien | 4,296.35 mi (6,914.31 km) |
| North Potomac to Jaslo | 4,566.12 mi (7,348.46 km) |
| North Potomac to Jastrzebie-Zdroj | 4,449.63 mi (7,160.99 km) |
| North Potomac to Jawor | 4,320.90 mi (6,953.81 km) |
| North Potomac to Jaworzno | 4,466.53 mi (7,188.19 km) |
| North Potomac to Jedrzejow | 4,489.58 mi (7,225.28 km) |
| North Potomac to Jelcz-Laskowice | 4,364.30 mi (7,023.66 km) |
| North Potomac to Jelenia Gora | 4,308.12 mi (6,933.24 km) |
| North Potomac to Jozefoslaw | 4,463.47 mi (7,183.25 km) |
