My favourites are from Decathlon, they are elasticated around the ankles but are loose legged, not quite Ali-baba but they could have been if I had bought a bigger size. They were very cheap (£7.99) and they are my everyday go-to running bottoms. Its been super-muddy recently so I often use them to walk in as well, the elasticated bottoms help to keep the mud off of the trouser bottom edges. I wouldn't use them if I was on a 'proper' walk, away for more than one day, but for local trips they are ideal. My secondary pair are 'Ron Hills,' but like 'Rather be walking' when on they give my wife a laugh!