maxgamr 
After unsuccessful attempts at collecting artifacts with Francisco Montoya, Zack Wonder, Montana Smith and Usain Bolt, I decided to circle back around to Guy Dangerous, and guess what – I was able to collect the Demon Claw Artifact just before the 9,500 meter mark. This tells us that not only can one Temple Run 2 character find multiple different kinds of artifacts, the single run distance to collect an artifact is not ‘progress’ or cumulative in nature. Which is a very good thing. Not sure how many people would be happy trying to chase down artifacts by needing to run over 50K+ meters each time. I need more data to see if there is a visible pattern or trend to better predict when an artifact will present itself. Have a look at the Demon Claw below!
By the way – I don’t want to spoil it, but the Twisted Root Artifact is next!
Only managed to collect 4 rings – Sky Clasp (Montana Smith), Floating Island (Francisco Montoya), Infinite Loop (Barry Bones) and Mystic Rocks (Zack Wonder). 3 out of 4 were found before 2,500m and the other was around 10,000. Done several runs 20,000m+ and found nothing with Guy Dangerous, Scarlett Fox or Karma Lee. Can’t see any sort of pattern to it at all.