Full details are still a bit tricky to track down, but here’s the run-down from the Department of Transportation. Click the map below for the most detailed listing of what’s happening and when :
Rainier Valley Summer Streets
Saturday, August 16, 2014
1:30 PM – 5:30 PMJoin us for the annual Heritage Parade from Noon – 1:30 PM, then come play with us at Summer Streets. We’ll open up Rainier Ave S (from S Alaska to S Brandon St) to people on foot and bike!
PS – Join Bike Works and Cascade Bicycle Club to lead the parade with bikes! Meet at 10:30 AM in the New Bethel Church Parking Lot across from the Rainier Valley Chamber of Commerce at 42nd and Rainier Ave S. They’ll have a bike decoration station available so you can spruce up your ride while we wait for the parade to start. Contact info@bikeworks.org for more details.
Event details:
In addition to the parade, don’t forget there’s the 3rd annual Columbia City BBQ contest, the Blues festival, and tomorrow night’s screening of Fantastic Mr. Fox as a part of Columbia City’s Cinema Under the Stars series. 
It’s gonna be a busy Saturday.
Update: the good folks over at the South Seattle Emerald also have a nice listing of what’s happening tomorrow. Be sure to check out their post as well.
Columbia City Source 