"Why climb a hill? For me it is partly the challenge – the physicality of a large hill is uncompromising and simple, you climb it or you don’t – but also their beauty, the solitude, the unknown paths. I love the physical exhaustion of climbing after a day of work, of mental fatigue and too much coffee which leaves me jittery. The hills offer an antidote, the steep slog requiring little concentration, save that of avoiding cows and putting your feet in the right place to ensure you do not slip. In some ways I feel that hill walking is the opposite of writing, that the physicality of one is the antithesis to the cerebral nature of the other, and that is why they complement one another so...