High Street is one of the classic "must do" mountain bike routes in the Lake District. The route includes an enourmous ascent which is partly rideable but mostly a carry. Once on the top this route is famous for it's sustained elevation travelling many miles along High Street itself before dropping back into the valley. The route back along Ullswater is just as good with technical rocky sections one after the other. The High Street summit is an "out and back" along the Straights of Riggindale. Having done all the hard work of the carry it's a must to tick the summit.