| Potomac to Isabela (Puerto Rico) | 1,542.99 mi (2,483.20 km) |
| Potomac to Iselin (New Jersey) | 186.75 mi (300.55 km) |
| Potomac to Isla Vista (California) | 2,362.82 mi (3,802.59 km) |
| Potomac to Issaquah (Washington) | 2,297.46 mi (3,697.40 km) |
| Potomac to Ithaca (New York) | 239.74 mi (385.83 km) |
| Potomac to Ives Estates (Florida) | 918.24 mi (1,477.76 km) |
| Potomac to Jackson (Michigan) | 438.74 mi (706.09 km) |
| Potomac to Jackson (Mississippi) | 863.65 mi (1,389.90 km) |
| Potomac to Jackson (Missouri) | 685.26 mi (1,102.82 km) |
| Potomac to Jackson (Tennessee) | 679.75 mi (1,093.95 km) |
| Potomac to Jackson (Wyoming) | 1,759.25 mi (2,831.24 km) |
| Potomac to Jacksonville (Alabama) | 596.11 mi (959.35 km) |
| Potomac to Jacksonville (Arkansas) | 871.54 mi (1,402.61 km) |
| Potomac to Jacksonville (Florida) | 651.42 mi (1,048.35 km) |
| Potomac to Jacksonville (Illinois) | 697.49 mi (1,122.50 km) |
