| Potomac to Medford (Massachusetts) | 396.12 mi (637.50 km) |
| Potomac to Medford (New York) | 255.57 mi (411.30 km) |
| Potomac to Medford (Oregon) | 2,374.85 mi (3,821.95 km) |
| Potomac to Medina (Ohio) | 287.32 mi (462.39 km) |
| Potomac to Medulla (Florida) | 812.01 mi (1,306.80 km) |
| Potomac to Mehlville (Missouri) | 707.19 mi (1,138.12 km) |
| Potomac to Melbourne (Florida) | 779.33 mi (1,254.21 km) |
| Potomac to Melissa (Texas) | 1,147.61 mi (1,846.90 km) |
| Potomac to Melrose (Massachusetts) | 399.47 mi (642.88 km) |
| Potomac to Melrose Park (Illinois) | 594.86 mi (957.33 km) |
| Potomac to Melville (New York) | 234.89 mi (378.03 km) |
| Potomac to Melvindale (Michigan) | 386.27 mi (621.65 km) |
| Potomac to Memphis (Florida) | 850.56 mi (1,368.85 km) |
| Potomac to Memphis (Tennessee) | 753.28 mi (1,212.29 km) |
| Potomac to Menasha (Wisconsin) | 681.50 mi (1,096.77 km) |
