5C Rock climbing routes - Bergen? or Tromsø? or Trondheim?

Hi there!

I have started rock climbing recently. I'm going to visit in Norway in July for a period of a month (while participating in an exchange program of medicine students). In this period I have 3 options where to be stay: Bergen or Tromsø or Trondheim 
Which of the 3 places do you recommend me to choose in order to have the posibility to enjoy from rock clymbing and mountaineering?

* I'm climbing routes graded ~5C (French grading).
* I have a good experience only in a sport climbing.
* I prefer to climb outdoor
* I will be able to move only by public transportation.
Thanks a lot

Eran

smamit@gmail.com