| Potomac to Myrtle Grove (Florida) | 825.07 mi (1,327.82 km) |
| Potomac to Myrtle Grove (North Carolina) | 340.10 mi (547.33 km) |
| Potomac to Nacogdoches (Texas) | 1,106.54 mi (1,780.81 km) |
| Potomac to Nampa (Idaho) | 2,048.32 mi (3,296.46 km) |
| Potomac to Nanakuli (Hawaii) | 4,830.80 mi (7,774.41 km) |
| Potomac to Nanticoke (Pennsylvania) | 163.71 mi (263.46 km) |
| Potomac to Nanuet (New York) | 221.21 mi (356.01 km) |
| Potomac to Napa (California) | 2,408.83 mi (3,876.65 km) |
| Potomac to Naperville (Illinois) | 607.05 mi (976.95 km) |
| Potomac to Naples (Florida) | 927.89 mi (1,493.29 km) |
| Potomac to Naranja (Florida) | 951.29 mi (1,530.95 km) |
| Potomac to Nashua (New Hampshire) | 393.99 mi (634.07 km) |
| Potomac to Nashville (Tennessee) | 560.20 mi (901.55 km) |
| Potomac to Natchez (Mississippi) | 950.72 mi (1,530.03 km) |
| Potomac to Natchitoches (Louisiana) | 1,025.42 mi (1,650.26 km) |
