The only way to go!
I have hiked, backpacked and even x-country skied in my long heavy twill skirts (Banana Republic from about 30 years ago). I wear long thick socks/stockings if I am in hiking boots or on skis, otherwise I use hiking sandals. Skirts hike up easily for crossing water and most importantly, they make it easy and modest to pee! The airflow is nice too on a hot day and they are far less gross to put on dirty when on a long hike or trip. It would be fairly easy to make one, they are "A-line" with a zipper, made out of a heavy "military" cotton twill (On mine, the side pockets are trimmed with leather so they don't fray).
About the author
Diane is the founder of Hiking For Her.
She's been on a hiking trail somewhere in the world for 5+ decades & loves to share her best hiking tips right here.