<P> This is a list of people who have walked across the United States from the east coast to the west coast or vice versa . Walking or running across the United States has long been pursued as a way to bring publicity to social causes . </P> <P> Mark Baumer walked across the USA in 81 days . He was killed in 2017 while attempting a second walk barefoot . </P>

How many miles across the usa coast to coast