We did a circuit this September starting and finishing in Blair Atholl and staying in Aviemore and Braemar. I logged the 3 days into walkjogrun.net. You can find them by typing in the start location (Blair Atholl, Loch Morlich and Braemar) and looking for TCC. It is very similar to the route from the Vertebrate Graphics book.
You get a real feel for being in the wild at times but it is not technically challenging with a max 15-20% singletrack. If it has been raining prepare to get your feet wet crossing the burns – we did!
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DSCF0784[/url] by BigR02[/url], on Flickr