If you Google Harewood hill climb that will give you lots of info.
Get there early and you can have a good walk round and a bacon butty.
There are a number of good spectator points which will become obvious, a good one is at the bend at the top of the final climb, you usually get one or two going sideways.
If you have the brass neck and arrive early go to the signing in shed and sign in as press ,you will get a tabard and access to parts of the course not usually accessible.
You can get away will most lenses, wide angle for the paddock shots and med tele should do.
I used a 24/105 and a 70/200 and a 10/××× wide angle.
Have fun it's great value for a day out