Join Simon Parker as he cycles through the 15 beautiful, treasured, but also threatened national parks of the United Kingdom. National parks offer escape within our busy isle, but their popularity and accessibility can be difficult for those who live in, and work and care for the parks. Simon sets out to explore this tension in the encounters he finds while travelling by bike. And what he also uncovers the human urge for space, shared trials and friendship. This is a book for anyone who travels to the British countryside in search of beauty and nature or adventure and challenge, at a point when rural life is more precarious than ever and the natural world more threatened than ever before.