Spatial Calculation doesn't match Mapping program

[Mark_Lurie]

I have latitude and longitude of a starting and ending point:

COUNTY	START_ZIP	START_LAT	START_LON	TARGET_ZIP	TARGET_LAT	TARGET_LON
MOHAVE	86409	35.46429	-114.032	86441	35.56205	-114.304

When I create the CENTOID points for the coordinates using the point tool and then finding the distance between the two CENTOIDS my results is 16.68 miles.

Using Google Earth, I calculated the straight line distance between the two zip codes and it is way farther than what I am getting in the Distance Tool.

Is the distance tool calculating the distance between to the two edges of each of the CENTOIDS? Should I be doing something else?

[alexnajm]

Can you confirm what lat long values are being used by Google Earth? I assume they are different then what you have in Alteryx - I would calculate by the exact points in Google Earth