Calculate distance between 2 latitude/longitude Point

Hi! I'm using the Django GEOS API [1] in my project to see the distance between two users.

I get the coordinates from google maps in latitude/longitude mode and I need to calculate the distance between them. I'm testing with .distance() method at GEOSGeometry but I receive a strange value.

This is the result of one of my test:

In [45]: Point(40.96312364002175, -5.661885738372803).distance(Point(40.96116097790996, -5.66283792257309))

Out[45]: 0.0021814438604553388

In Google Maps Distance Calculator [2] I can see that the result is: 0.145 miles = 0.233 km = 0.126 nautical miles = 233 meters = 764.436 feet

A friend told me on Google that perhaps I must calculate the distance in UTMs and the results surely is a lat/long distance. To test it I need pygps that is a project not maintained to import LLtoUTMfrom from LatLongUTMconversion

Any idea about this?

[1] http://docs.djangoproject.com/en/dev/ref/contrib/gis/geos/

[2] http://www.daftlogic.com/projects-google-maps-distance-calculator.htm

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