I bought the Scarpa Treks in 43 and also bought some Scarpa SL Actives in 43 at the same time but the SLs didn’t fit at all, much more narrow than the Trek which I think are the comfort last.
I’m a 43 in my Shimano MT51s and MW81, I have some Specialized Expert Carbon mtb shoes in 42 that are snug and also some in 43 which are less snug and I use with my woolie boolie socks instead of normal thin DeFeet socks. I am a 43 in my North Face mules, and a 43 in my Merrell Moab II Mid boots, which fit like a glove when used with the green Superfeet insoles.
With the green Superfeet insoles in the Scarpas they fit really nicely (probably would of with the supplied insoles but I’ve used the Superfeet for so long I stayed with them). They are close fitting around the heel and ankle (I kick my heel down into the boot when doing them up) and the toe box is roomy – almost making me think I ‘might’ have been able to go to 42 but when testing size with my foot pushed forward I get the fingers width behind the heel as most fitting videos suggest, and the insole test looks about right.
I did go out walking for about 4 hours in my Merrells around a local loop of about 9.5 miles and 2280 ft of elevation, so that my feet were ‘swollen’ up, and then tried the Scarpas for another couple of hours around the house and up and down the stairs, before finally deciding they were good.
I have now walked a lot in them – initially my lower legs needed breaking in to cope with the extra stiffness of the ankle support, and my feet needed hardening up as well. But when I bought the second pair and walked in them, the was no breaking in needed, now I was broken in… They have not creased up excessively before the toe box after many miles of walking, which would have happened if they were too long.
I’m using some Bridgedale merino socks so pretty normal thickness.
