| San Marcos to Jacksonville (North Carolina) | 2,268.24 mi (3,650.38 km) |
| San Marcos to Jacksonville (Texas) | 1,276.44 mi (2,054.24 km) |
| San Marcos to Jacksonville Beach (Florida) | 2,101.72 mi (3,382.39 km) |
| San Marcos to James Island (South Carolina) | 2,147.83 mi (3,456.60 km) |
| San Marcos to Jamestown (New York) | 2,147.10 mi (3,455.43 km) |
| San Marcos to Jamestown (North Dakota) | 1,357.84 mi (2,185.23 km) |
| San Marcos to Janesville (Wisconsin) | 1,660.87 mi (2,672.91 km) |
| San Marcos to Jasmine Estates (Florida) | 2,066.10 mi (3,325.06 km) |
| San Marcos to Jasper (Alabama) | 1,717.67 mi (2,764.32 km) |
| San Marcos to Jasper (Indiana) | 1,725.37 mi (2,776.72 km) |
| San Marcos to Jefferson (Georgia) | 1,923.76 mi (3,096.00 km) |
| San Marcos to Jefferson (Louisiana) | 1,601.47 mi (2,577.31 km) |
| San Marcos to Jefferson City (Missouri) | 1,444.40 mi (2,324.54 km) |
| San Marcos to Jefferson Hills (Pennsylvania) | 2,104.70 mi (3,387.19 km) |
| San Marcos to Jefferson Valley-Yorktown (New York) | 2,425.83 mi (3,903.99 km) |
