A few days ago, I decided to bike home from work (from Brussels to Leuven). Inspired by the "gefietst" blog en based upon the route here I made my adapted route to get to my home. The bike trip went well. Of course, I was wandering how long the bike trip was. Since I have a basic bike with no equipement to measure this I had to resort to the Google Maps info. I was almost sure that a webservice would exist that calculated the length of linesegments of Google Maps or from a KML file but after some searching I found no easy way to do this via the web. (If somebody would be aware of such a service, please drop me a line in the comments) Therefore, I decided to write a small Python script to calculate the lenght of all lines drawn on a Google Map. Just go to your map, click on "Link to this page", copy the URL and fill the URL in the Python script. Run the Python script and, bingo, you have the length in kilometers for every continuous linesegment. Here's the code:
The output of the above script is:
distance of fietsweg is 36.35 kilometer
Of course, this calculation is only an approximation since the trajectory is only an approximation (albeit a pretty good one) of the real route I followed and no heigth information is taken into account. Still I guess that its accurate upto a few kilometers. If somebody has a spare Bluetooth GPS receiver, you can always send me one ;-).