Best Spot for Early-ish morning Workout Ride near LAX?

Have to pick up a friend 9am LAX on Saturday so looking for a ride I can do en route
I'll be driving there from east side with bike in car.

Currently doing power-based training so ideally looking for minimal traffic/junctions/pedestrians where I can get some speed up etc.

Assuming beach path will already be too busy at 730-830am

Is the Expo line a good fit?