[maemo-users] Fwd: [maemo-users] how to determine track's length from GPX-file

[From: Armin M. Warda]

Nils wrote:
> I do not want to start nitpicking here but that solution is rather inaccurate. 
> It might serve as a first rough estimation
> but it neglects the fact that the earth is not a perfect sphere.

How (in-)accurate is it? Possible to quantify?
Up to 5% error would be tolerable for me,
because I only use it for cycling.

  regards, Armin.