How long does it take Giants to respawn? Alternatively, where can I find a rapidly respawning Giant?
Solution 1:
I believe once you have taken down a Giants Camp (and it is confirmed as cleared on the map) it takes around 2 weeks (ingame) for the Camp to respawn - I read this somewhere when I was looking over Giant Camps for the toes too. However, they still roam freely around the open plains with mammoths. Its just a case of running around for a while until one spawns.
Solution 2:
It takes roughly twenty days in game...however, don't return to the giant camp during those twenty days or the respawn timer will reset itself for that individual camp.