Forrest -
One of the most popular sites is Tiger mountain in Issaquah. Go east on I-90 from I-5 or I-405 until you hit the Issaquah exits; take the second one (Front Street) and turn right. Drive through town and then another mile or so (I believe the road becomes Issaquah-Hobart Road after you get through downtown). You'll see the LZ on your left. If you see a convenience store on your right you've passed the LZ. You won't have any trouble finding it; there are tons of pilots there on any nice weekend.
Fly safe!
