Table A-21Long-Distance Trips by Age, in Percent Excel | CSV Percent SE Under 25 25.7 0.49 25-64 65.8 0.52 65 or older 8.5 0.26 Total 100.0 NOTE: SE = standard error. SOURCE: The 2001 National Household Travel Survey, preliminary long-distance trip file, U.S. Department of Transportation. Updated: Saturday, May 20, 2017