October 18, 2014. For a barking good time, grab your dog and check out the Good Dog – Dirty Dog 5K Walk/Run. Held at Folsom Lake, California, this inaugural fun run gives you a choice between walking along the shore of Folsom lake or running the trails under old oak trees. There’s an aid station for you and your dog at the half way point with cold water, electrolyte beverage, and CLIF Shot energy gels. A great day out with your pooch plus a portion of your entry fee benefits California State Parks.