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I did ran all the way. Surely it wasn't fast, but take in account that there was 2000+ meters of elevation gain.

I found your Strava data and updated my comment.

And pfft 2000m+ elevation gain over 50km. Those are gently rolling hills ;-)

15/min miles make that more of an 8 hour 'walk'

See the clarifications from pneumatics. It looks like he ran it, just stopped a lot.