Hiking at Lagoon Valley in Vacaville, CA is one of our favorite local spots. The park has a number of trails to choose from in varying degrees of difficulty. For the more difficult hikes, we strap on the kids and work our way up the steep hills. For a more leisurely adventure, we walk through the trees or visit the ducks at the Lagoon. Our kids love to check out the dog park, watch the ducks and finish the day off on the swings.