There is a 5K up on August 25th in Bothell coming up that myself and my family will be attending (too early for you?). My mother is the marketing director for Healthpoint so she is the one putting this on. The cost is relatively small as this is the first year this is being put on. Realistically, all the entrance fees are going directly to the setup fees as they don't think they will actually be making a profit (if they did, it would obviously be going to running the community health centers). It is more to "raise awareness" of health and the idea of community health centers; hopefully this will grow into an annual event. The last I heard was they already more than 300 people signed up.
Let me know if you have any questions.
here the their homepage, there is a registration link on the main page: