Ray Miller + both routes is 16.5 miles total with +2,700 ft elevation gain.

Ray Miller + the Fireline loop is 10 miles total
Ray Miller + the La Jolla Pond loop is 11.5 miles total

I’d never done this as a combination and I really liked it!
So first I ran the loop that follows the Overlook fire road into Sycamore and then up Fireline single track to head back to Ray Miller. If you decide to go back down here you will end up with a very nice 10 mile lollipop loop.
Instead of returning I decided to keep going to the four corners, which is another 2 mile out on the Overlook fire road. From there I headed left, down into La Jolla Valley and ran the single track that goes around the pond, so so pretty and sirene!!! This little loop adds 2.5 miles from the four corners. In total adding 6.5 miles to the first 10 miles.