This looks like a fun summer event, either to participate or spectate. Unfortunately I just found out about it, so only day-of registration is an option at this point.
This Saturday, July 25th, the Great Inflatable Race will be held at Lake Sammamish State Park near Issaquah. It’s a 5k fun run that includes an obstacle course of various kinds of inflatables, and is designed for the whole family. Procedes will benefit the Colon Stars charity.
If running, jumping, and climbing isn’t your bag, it’s free to watch others doing those things in a festive atmosphere by the lake. You can get all the details at the link below.