Compilation of the RT podcast discussing Gavin's 'Run Down a Mountain' Theory.

I couldn't find any video of someone jumping out of a plane and running down a mountain in GTAV, the closest thing I found is this:
   • FailRace GTA 5 Downhill Chaos Ep 16 S...  

There's also this real-life skydiving video that is a partly related to Gavin's theory:
   • Skydiver's near impact and landing on...