Well, I am booked in for the RBLR in June, that was the reason for trying it now. Before this I had only done a 500+ mile run, so wanted to see how I went doing the full run, you will notice I left plenty of escape routes during the run in case things didn't go to plan( A66 to Penrith, A69 to Carlisle, Edinburgh to Glasgow) thankfully they were not needed.