Desert hiking can be a killer, literally. Those planning to do any serious hiking at Saguaro National Park are strongly advised to talk with rangers about their plans before setting out, and then to carry at least a gallon of water per day per person. Rangers do not recommend hiking at all in the summer, when temperatures frequently reach a scorching 115°F (46°C). Because some of the longer trails are difficult to follow, hikers are advised to carry good topographical maps, available at the visitor centers.

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