Did the Sumas Super Grind(bakers trail) today its nuts. If your very experienced i reccomend it.
I did it today, and let me tell you, it's nuts! It's just 2.5km with 900m of ascent, and there was class 1 scrambling at some points too. The trail is pretty well maintained in some parts, but a lot is just going through mud steps or a sketchy path, considering it's just vertically up. If you're looking for a very hard challenge that's tougher than the Grouse Grind, I recommend it. It's way shorter than a normal summit hike but so steep. I didn't want to hike back down the way I came, as it would be mostly just downclimbing, so I went right at the summit and took the path around. It's a really beautiful trail down with some rough spots.
Only do this if you're very fit and confident with scrambling experience, though. It's kind of tucked away, so I didn't see any other hikers apart from all the ones who came the normal way.