I don't stay any longer in the canyon than it takes for me to shift back into my wolf and gather my bag, but the run back to the academy takes hours. With the additional wave of energy that overcome me after Hades' fire, the trip was shorter than it could have been, thankfully. For most of the distance, I was making my way though a valley, but for some of it I needed to use the roads to be able to get through the mountains quickly, so to remain unseen and hidden I had to slow down at that point.
I was dog tired, no pun intended, but I made it without further incidents. Which surprises me, given the luck I have had so far. Or lack of luck, I should say. Though you could argue that making a deal with a God was the definition of luck - it just remains to be seen if it was good luck or bad luck.