Oddly it seems very inconsistent when sprint decides to work or not when polymorphed.
Particularly with druid Totem shape your move speed will climb as you level up your totem shape normally, until you get to level 18. Then it will drop to 5% move speed again and eventually goes back up to 45% bonus at 26.
With monolithic elementals, earth only get 5% movespeed bonus, water gets 10% and fire gets 30%.
