More than 2700 miles, in a least one case.
Source: The places that flipped and gave the country to Trump (CNBC)
The New York Times, 2/10/2019
“The president is just wrong about the wall and wrong about El Paso,” said Jon Barela, a lifelong Republican and chief executive of the Borderplex Alliance, an organization promoting economic development in a cross-border industrial hub with a combined population of more than 2.7 million, taking in the cities of El Paso, Ciudad Juárez and Las Cruces.
Source: U.S. Census Bureau QuickFacts
It's a landslide for Clinton in El Paso County.