The flare is the boot cut yeah
Sound when I’ve got a pair of boots on in winter (meindl bhutans fellow gear fans) but when I want to move a bit quicker with some trail shoes on they do my nut in
Have a look at some trail running trousers, rather than the walking ones ?
INOV8 do some decent ones and they`re super light, as they`re made for storing in a running vest.
They don`t tend to be as waterproof as the walking ones, but they still do the job to a point.