The Swiftwater boulders are an easily accessible group of boulders that lie on both sides of Hwy. 2. There are a handful of classics here as well as plenty of other problems to play around on and warm up on.
From Leavenworth drive approximately 7 miles up Tumwater Canyon (Hwy. 2). Keep a lookout for a picnic area on the left side of the road (I believe it's called the Swiftwater picnic area). Park in the parking lot.
Browse More Classics in Swiftwater Boulders
Mountain Project's determination of some of the classic, most popular, highest rated routes for Swiftwater Boulders:
Featured Route For Swiftwater Boulders