https://twitter.com/C2CRun
These guys are doing a coast to coast Tesla run.  Scrolling through the most recent stops, they seem to be stopping almost every 2 hours to charge.  They are on their way back, no the way out they said they did 4641km, with 27 supercharger stops.  That's a stop every 172km.  Looking at many of the posts, it seems they were low on charge often.  This seems like a lot of stops with not much km covered.  Be interesting to know what is going on.