Just about everyone has to deal with sweaty feet in some fashion, but of course some people have a worse case of wet feet than others.
In many cases, socks made with merino wool will solve much of the problem. Thats because the wool fibers have tiny pockets on them that do an admirable job of sopping up excess moisture. Several brands are available, but the more or less pioneer here is the Smartwool company (smartwool.com). In the U.K., Cotswold carries Smartwool socks such as the standard Hiking Sock (£13) or the heavier Expedition Trekking Sock (£17). Heavier might be bettermore fibers for more absorption. Also, buy two pairs. It might be a good idea to change your socks at the mid-point of your hike.
Wool socks can be worn alone, but in some cases a light liner sock can help wick moisture away from your feet. Try some Bridgedale Coolmax Liners (£12 for a pair; bridgedale.com). Then layer the wool socks over them.
Another perfectly reasonable thing to do is spray your feet with antiperspirant prior to socking up for your hike. That works quite well, really. Plus your feet wont smell as bad at the end of the day!
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