Around Auckland, there are several mountains, all of these are extinct volcanos which if you are like me, will still freak you out. Once you get past that though, they are excellent for exercise and to get the best free views of the city! Here are my top two:
The tallest mountain in Auckland at 196 meters or 643 feet.
One Tree Hill:
It has two parks that lead up, the One Tree Hill Park and Cornwall Park. It is 182 meters or 597 feet.