Yeah the skyline track (includes the bit from Makara to Mt Kaukau that Jess mentioned) is rad, you can get all the way out to Ohariu Valley if you have enough time! and there's lots of little tracks that go off it to different parks along the way and tunnels and stuff to explore :)

But yeah it does get so windy up there that you have to literally crawl sometimes!

You can get a set of free little maps of tracks all around wellington from tourist information centres and the library too which are pretty cool and just to top it off they are colour-coded (I'm a sucker for matching sets of things!)