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Paper map & compass
Learn the trails this way, then run without when you know where you are going. It will slow you down at first but worth it in the long run when you have good knowledge of an area and can just head out in a direction and make up the route as you go depending on feel etc.
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It also makes accessing other new areas much easier, and is a useful backup skill for if (when) tech fails.
P.s. @charliesays - always tell your mummy before you go off somewhere (as you no doubt know already).
Paper map & compass.