I got over a thousand miles out of each pair of these on the PCT. Tried and true, these socks are incredible. Even after washing granite dust and rocks out of these socks every night for months on end they held up incredibly. An additional bonus is that Darn Tough stands by their unconditional guarantee and I was able to trade my worn out socks for a new pair, no questions asked. An awesome sock from an awesome company. You will not find many people on trail wearing anything other than Darn Tough.