| Rancho Santa Margarita to Havelock (North Carolina) | 2,309.47 mi (3,716.73 km) |
| Rancho Santa Margarita to Haverhill (Massachusetts) | 2,568.89 mi (4,134.23 km) |
| Rancho Santa Margarita to Havre de Grace (Maryland) | 2,316.57 mi (3,728.15 km) |
| Rancho Santa Margarita to Hawaiian Gardens (California) | 30.50 mi (49.08 km) |
| Rancho Santa Margarita to Hawaiian Paradise Park (Hawaii) | 2,487.07 mi (4,002.55 km) |
| Rancho Santa Margarita to Hawthorne (California) | 47.24 mi (76.02 km) |
| Rancho Santa Margarita to Hawthorne (New Jersey) | 2,415.14 mi (3,886.79 km) |
| Rancho Santa Margarita to Hayden (Idaho) | 977.59 mi (1,573.28 km) |
| Rancho Santa Margarita to Hayesville (Oregon) | 834.54 mi (1,343.06 km) |
| Rancho Santa Margarita to Hays (Kansas) | 1,078.66 mi (1,735.94 km) |
| Rancho Santa Margarita to Haysville (Kansas) | 1,166.94 mi (1,878.01 km) |
| Rancho Santa Margarita to Hayward (California) | 373.60 mi (601.25 km) |
| Rancho Santa Margarita to Hazel Crest (Illinois) | 1,716.57 mi (2,762.55 km) |
| Rancho Santa Margarita to Hazel Dell (Washington) | 874.33 mi (1,407.10 km) |
| Rancho Santa Margarita to Hazel Park (Michigan) | 1,958.39 mi (3,151.72 km) |
