| Rancho Santa Margarita to Jacksonville (North Carolina) | 2,283.87 mi (3,675.53 km) |
| Rancho Santa Margarita to Jacksonville (Texas) | 1,299.89 mi (2,091.97 km) |
| Rancho Santa Margarita to Jacksonville Beach (Florida) | 2,123.68 mi (3,417.74 km) |
| Rancho Santa Margarita to James Island (South Carolina) | 2,166.43 mi (3,486.53 km) |
| Rancho Santa Margarita to Jamestown (New York) | 2,152.97 mi (3,464.87 km) |
| Rancho Santa Margarita to Jamestown (North Dakota) | 1,347.86 mi (2,169.17 km) |
| Rancho Santa Margarita to Janesville (Wisconsin) | 1,664.15 mi (2,678.19 km) |
| Rancho Santa Margarita to Jasmine Estates (Florida) | 2,090.76 mi (3,364.76 km) |
| Rancho Santa Margarita to Jasper (Alabama) | 1,736.15 mi (2,794.06 km) |
| Rancho Santa Margarita to Jasper (Indiana) | 1,736.44 mi (2,794.54 km) |
| Rancho Santa Margarita to Jefferson (Georgia) | 1,941.21 mi (3,124.07 km) |
| Rancho Santa Margarita to Jefferson (Louisiana) | 1,626.55 mi (2,617.67 km) |
| Rancho Santa Margarita to Jefferson City (Missouri) | 1,454.59 mi (2,340.93 km) |
| Rancho Santa Margarita to Jefferson Hills (Pennsylvania) | 2,113.09 mi (3,400.69 km) |
| Rancho Santa Margarita to Jefferson Valley-Yorktown (New York) | 2,432.83 mi (3,915.26 km) |
