| Potomac to Keene (New Hampshire) | 372.84 mi (600.02 km) |
| Potomac to Keizer (Oregon) | 2,356.78 mi (3,792.86 km) |
| Potomac to Keller (Texas) | 1,193.14 mi (1,920.18 km) |
| Potomac to Kelso (Washington) | 2,342.92 mi (3,770.56 km) |
| Potomac to Kemp Mill (Maryland) | 9.46 mi (15.23 km) |
| Potomac to Ken Caryl (Colorado) | 1,487.39 mi (2,393.73 km) |
| Potomac to Kendale Lakes (Florida) | 938.10 mi (1,509.73 km) |
| Potomac to Kendall (Florida) | 940.11 mi (1,512.97 km) |
| Potomac to Kendall Park (New Jersey) | 170.01 mi (273.60 km) |
| Potomac to Kendall West (Florida) | 938.57 mi (1,510.48 km) |
| Potomac to Kenmore (New York) | 286.61 mi (461.25 km) |
| Potomac to Kenmore (Washington) | 2,306.38 mi (3,711.77 km) |
| Potomac to Kenner (Louisiana) | 967.65 mi (1,557.28 km) |
| Potomac to Kennesaw (Georgia) | 536.95 mi (864.14 km) |
| Potomac to Kennett (Missouri) | 728.31 mi (1,172.10 km) |
