Anyone who has spent a long day moving fast over the fells knows the feeling: the legs are fine on the flat, but the moment you hit boulder fields, tussocky bog or a steep, loose descent, everything starts to ache. That is not imagined. Rough ground forces your muscles into constant small corrections — twisting, bracing, absorbing. Descending in particular loads the quads and calves eccentrically, meaning the muscle lengthens under tension, which causes far more microscopic damage than a steady climb.
Add a heavy pack, a long drive home and a late supper eaten standing up in the kitchen, and you have the perfect recipe for a week of heavy legs. The good news is that recovery is not mysterious. It comes down to three things you can control: how hard you go the next day, what you eat, and how well you sleep.
The temptation after a big day out is either to collapse completely or to "make up" for it with another hard session. Neither helps. Complete rest can leave you stiff and sluggish, while back-to-back hard days simply dig a deeper hole.
What works best is active recovery — gentle movement that increases blood flow without adding strain. Aim for something that feels almost too easy.
If your legs feel genuinely battered, take the full rest day. One easy day now saves a fortnight of niggles later. And be honest: if you are limping downstairs, that is a rest signal, not a challenge.
Long days on the hill deplete glycogen and leave muscle fibres in need of repair. Carbohydrate refills the tank; protein does the rebuilding. Most hill runners and walkers get the first part roughly right and the second part badly wrong.
Aim for 20–30g of good-quality protein within an hour or two of finishing, then repeat that dose at regular intervals through the day. Across a heavy week, somewhere around 1.6–2.2g per kilogram of bodyweight per day is a sensible range for most people. Practical, everyday options include:
Do not neglect carbohydrate either. Rice, potatoes, pasta, bread and fruit are what actually restock the muscles. Eat vegetables and a little salt with it, especially if you sweated heavily in windproofs all day.
You can eat perfectly and still feel wrecked if you are short on sleep. Most of the muscle repair, hormone regulation and nervous system recovery happens overnight, so seven to nine hours is the target, not a luxury. The nights after a long hill day are often the ones where you sleep worst — legs twitching, mind still running the route.
None of these will transform you on their own, but together they make a real difference across a season.
Here is what a sensible day after a long, rough trail run might look like. Wake, drink a large glass of water, then eat porridge with yoghurt and fruit. Take a 40 minute flat walk mid-morning — nothing strenuous, just moving. Lunch on eggs on toast with a pile of salad. Spend the afternoon doing light chores, with a short nap if you can manage it. Supper is something substantial and protein-rich, such as cottage pie with plenty of vegetables, followed by an early night.
It will not feel heroic. But that quiet day is what allows the next big day out on the hills to feel good rather than merely survivable. Recover well, and you will keep going back for more.