The Oakbrook Vista Trail is a relatively easy out and back climb that provides nice panoramic views of the Lang Ranch area of Thousand Oaks. Access to the trail is on the south side of Lang Ranch Parkway, just west of Westlake Boulevard. See access point below.
The first portion is a narrow trail that zig zags its way to a bench, where you can rest and enjoy the views. But I'd estimate this is only 1/4 of a mile, so keep going if you're game!
For a trail map and additional information, visit the Conejo Open Space Foundation website at www.cosf.org/website/html/oakbrook-vista-trail.html.