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It's... basically completely up to you. As with lots of things, it's about striking a balance - you can walk directly uphill if you like and it'll make for a shorter route, but it'll be hard going...
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#1: Initial revision
It's... basically completely up to you. As with lots of things, it's about striking a balance - you _can_ walk directly uphill if you like and it'll make for a shorter route, but it'll be hard going. You _can_ also walk exactly following the countours of the hill - easy going, but you're not going to get anywhere very fast. Experiment, work out angle you're comfortable walking at. You can also take into account a few things about your environment. If you're on wild land, there may be existing animal trails that you can follow, which might be easier walking. If there are man-made features like fences or walls, likewise - following them is often an easier walk. Also bear in mind your terrain - if you're on rocky ground or scree slopes, you'll probably want to take a shallower angle than if you're on compacted dirt.