Sunnyside starts off the top of Squaw One Express and travels all the way to the base of the mountain.
Turn left off of the top of Squaw One Express and the run starts right there.
This first part is the steepest.
You will parallel the Mountain Run for a while and then bear left above Spring bowl.
You will now be on the north side of Squaw Creek on at narrower section that leads to big right turn that can be rocky.
Continue down bearing left as it flattens past the base of Headwall chair.
The last section is across a bridge as you cross Squaw creek again and end at the Olympic House.
Sunnyside is less crowded than the Mountain Run, so it's a nice option on busier days.
It opens later in the season because of it's exposure.