| Rancho Santa Margarita to Hereford (Texas) | 871.31 mi (1,402.23 km) |
| Rancho Santa Margarita to Hermiston (Oregon) | 847.69 mi (1,364.22 km) |
| Rancho Santa Margarita to Hermitage (Pennsylvania) | 2,088.07 mi (3,360.42 km) |
| Rancho Santa Margarita to Hermosa Beach (California) | 48.57 mi (78.16 km) |
| Rancho Santa Margarita to Hernando (Mississippi) | 1,574.12 mi (2,533.30 km) |
| Rancho Santa Margarita to Herndon (Virginia) | 2,250.83 mi (3,622.37 km) |
| Rancho Santa Margarita to Herriman (Utah) | 564.72 mi (908.84 km) |
| Rancho Santa Margarita to Herrin (Illinois) | 1,621.75 mi (2,609.96 km) |
| Rancho Santa Margarita to Hershey (Pennsylvania) | 2,286.33 mi (3,679.49 km) |
| Rancho Santa Margarita to Hesperia (California) | 55.35 mi (89.08 km) |
| Rancho Santa Margarita to Hewitt (Texas) | 1,195.90 mi (1,924.62 km) |
| Rancho Santa Margarita to Hialeah (Florida) | 2,287.45 mi (3,681.29 km) |
| Rancho Santa Margarita to Hialeah Gardens (Florida) | 2,283.95 mi (3,675.67 km) |
| Rancho Santa Margarita to Hibbing (Minnesota) | 1,595.11 mi (2,567.09 km) |
| Rancho Santa Margarita to Hickory (North Carolina) | 2,054.46 mi (3,306.34 km) |
