You're watching the first chapter of my third attempt to cross Wales in a completely straight line, and despite my hopefulness of a more boring, straight forward operation, this one is a thriller. Due to Greg's work commitments I am joined by my brother Ben this time as we try our very best to sneak, vault, barge, run, climb, paddle and hobble our way across the unforgiving landscape of mid Wales for what I am desperately hoping is the third and final time. With two failed attempts under my belt and news of other brits plotting to beat me to it, I am hungrier than ever for success. However, it's sheep tupping season in the October foliage smeared hills of Powys, and despite my experience and planning, failure is still very much on the cards.