Seeking XC Trails Near Santa Monica

Heading out to Seattle and LA next week and planning to rent some mtbs. I have a pretty good idea on where I want to ride in Seattle (Raging River Trail System sounds right), but not where to go near Santa Monica.

I'm seeking trails that keep you moving, so I hope to avoid rock gardens, root structures, and slow technical riding. Can anyone recommend some fast, flowy XC type trails that allow you to stay in a high pace (preferably not far from the ocean)?

Thanks in advance.

Reagan
Austin, TX