I have a couple pairs of these pants. I'm 5'10 and my first pair was regular length--I wished they were a couple inches longer, so when I got a new pair recently, I got the long and they're great. They are sized a little large--I probably could have fit a 4, but since I knew I'd be climbing in them, I opted for the roomier 6. These are my go to winter climbing pants. They strike a good balance between being warm and having a good amount of stretch for high stepping and heel hooking. If I want to get in a quick gym session before work, I wear these--I just brush off the chalk and I'm ready for the office.