About a 5 1/2-mile, 1000-foot elevation gain loop hike in Walnut Creek's Lime Ridge Open Space. Route is from Arbolado Park via Ohlone, Blue Oak and Buckeye Trails to the summit where we will stop for a short rest/snack stop. Return via Lime Ridge, Paraiso and Ohlone Trails. Water and flush toilets at the parking lot. Take the second entrance into the park and meet at the restrooms near the tennis courts. Sorry, no dogs allowed in parts of Lime Ridge. Arbolado Park address is 3500 Arbolado Dr for mapquest or Google users.