It depends how far north you are intending to go really.

If you are planning as far as Glasgow and north of that then I would recommend the following:

Fistly I would urge you to try and see Ballochmyle.

http://www.themodernantiquarian.com/site/156

It is a bit of a detour if you are heading generally north but I guarantee its a jaw dropper. The pictures dont do it justice cos its _big_ it covers two large sandstone walls. My somewhat doom laden post about it doesnt really mention the fact that we were totally gobsmacked when we came through the wood and got a first look at it! Simply stunning.

Next head for Callander and onto Loch Tay

http://www.themodernantiquarian.com/site/175

and surrounding area. There are some great spots to camp next to the Loch (on the opposite side to Killin). Now is a good time to visit Scotland cos the midges dont get really bad until the summer.

http://www.themodernantiquarian.com/post/16647

Back up the road to Crianlarich and onwards to Kilmartin (you might have to go back down the road a bit to the Tarbert turn off on Loch Lomond). There is probably a quicker way but I have no map handy.

There is a good spot to camp just past Kintraw. Take the first left after Kintraw and keep driving past the marina until you come to a gate onto the tip of the penisula. There is a car park and a small piece of land to pitch the tent with views to Jura and the Corrievrechan whirlpool (way way way in the distance).

WM