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Longest distance on land

The longest distance you can travel between two points in straight line without crossing any ocean or any major water bodies goes from Liberia to China.  It start at 5°2'51.59"N   9°7'23.26"W about 10 Km north of Greenville, Liberia  and end at 28°17'7.68"N 121°38'17.31"E near Wenling China.  A 13,589.31 Km walk in straight line!   It crosses 9 time zones and 18 countries and territories. The road goes like this:  Liberia, Côte d'Ivoire, Burkina Faso, Ghana, Burkina Faso again, Niger, Chad, Libya, Egypt, Israel, the West Bank,  Jordan, Iraq, Iran, Turkmenistan, Uzbekistan, Tajikistan, Afghanistan, Tajikistan again and finally China.

Map with two points equidistant projection (WGS 84) using the extremities of the line as parameters. 
Click on the map to see the full size image.

On Google Map the line appear as a curve because of the projection used by Google.
However opening the file in Google Earth the line is perfectly straight.

Beginning of the line in Liberia (Google Earth snapshot)

Segment at the Egyptian/Israeli border 

In Iran near the Caspian sea

The Chinese end

IIn the attachments bellow you will find the Google Earth file. The file is very short. There are only two points for the line.

Guy Bruneau,
Mar 13, 2010, 10:25 PM