Place markers on the map and choose Best Flight or Best Drive to compute an optimal traveling salesman tour through marked locations. The interface allows up to 12 markers. It makes sure that markers are all within each others driving range, i.e. that Google can find driving directions between them. Clicking on the small black circle inside markers deletes them.
Use your left mouse button to create markers on the Google Map or enter an address in the text field above the map and click 'Add!'.
Once there are at least three markers you can use the "Best Drive" or "Best Flight" menu items on the left to compute the best traveling salesman tour visiting your markers.
The 'Best Flight' tour uses the direct distance between markers as a distance measure. 'Best Drive' uses driving times between locations as they are computed by Google.