gpx more than 1 <trk>

[parkstraat9]

I have a gpx file that has more than 1 < trk > section.
When I read that file with $activity->getTotalDistance()
I got only a part of the total distance.

Is there an option to read all < trk > segments at once?

example file:
https://www.dropbox.com/s/ovikbiex7ikp6zy/Grand%20TUHR.GPX?dl=1

[cwarwicker]

Hi,

I'm a bit confused by that file. It looks like the 2nd section contains elements from various different dates and times.