| Rancho Santa Margarita to Hillcrest Heights (Maryland) | 2,274.07 mi (3,659.77 km) |
| Rancho Santa Margarita to Hilliard (Ohio) | 1,942.46 mi (3,126.09 km) |
| Rancho Santa Margarita to Hillsboro (Oregon) | 869.13 mi (1,398.73 km) |
| Rancho Santa Margarita to Hillsborough (California) | 380.78 mi (612.80 km) |
| Rancho Santa Margarita to Hillsborough (New Jersey) | 2,390.58 mi (3,847.27 km) |
| Rancho Santa Margarita to Hilo (Hawaii) | 2,489.90 mi (4,007.11 km) |
| Rancho Santa Margarita to Hilton Head Island (South Carolina) | 2,128.45 mi (3,425.40 km) |
| Rancho Santa Margarita to Hinesville (Georgia) | 2,084.83 mi (3,355.22 km) |
| Rancho Santa Margarita to Hinsdale (Illinois) | 1,706.99 mi (2,747.13 km) |
| Rancho Santa Margarita to Hobart (Indiana) | 1,737.28 mi (2,795.88 km) |
| Rancho Santa Margarita to Hobbs (New Mexico) | 836.62 mi (1,346.40 km) |
| Rancho Santa Margarita to Hobe Sound (Florida) | 2,266.05 mi (3,646.86 km) |
| Rancho Santa Margarita to Hoboken (New Jersey) | 2,422.54 mi (3,898.71 km) |
| Rancho Santa Margarita to Hockessin (Delaware) | 2,338.70 mi (3,763.78 km) |
| Rancho Santa Margarita to Hoffman Estates (Illinois) | 1,699.01 mi (2,734.30 km) |
