| Rancho Santa Margarita to Keene (New Hampshire) | 2,507.26 mi (4,035.05 km) |
| Rancho Santa Margarita to Keizer (Oregon) | 836.97 mi (1,346.97 km) |
| Rancho Santa Margarita to Keller (Texas) | 1,175.85 mi (1,892.35 km) |
| Rancho Santa Margarita to Kelso (Washington) | 907.02 mi (1,459.71 km) |
| Rancho Santa Margarita to Kemp Mill (Maryland) | 2,270.12 mi (3,653.41 km) |
| Rancho Santa Margarita to Ken Caryl (Colorado) | 804.00 mi (1,293.92 km) |
| Rancho Santa Margarita to Kendale Lakes (Florida) | 2,285.81 mi (3,678.66 km) |
| Rancho Santa Margarita to Kendall (Florida) | 2,289.84 mi (3,685.14 km) |
| Rancho Santa Margarita to Kendall Park (New Jersey) | 2,395.56 mi (3,855.28 km) |
| Rancho Santa Margarita to Kendall West (Florida) | 2,284.08 mi (3,675.87 km) |
| Rancho Santa Margarita to Kenmore (New York) | 2,175.23 mi (3,500.70 km) |
| Rancho Santa Margarita to Kenmore (Washington) | 1,005.05 mi (1,617.47 km) |
| Rancho Santa Margarita to Kenner (Louisiana) | 1,619.87 mi (2,606.93 km) |
| Rancho Santa Margarita to Kennesaw (Georgia) | 1,884.90 mi (3,033.45 km) |
| Rancho Santa Margarita to Kennett (Missouri) | 1,565.60 mi (2,519.59 km) |
