De Portola is a wonderful road, but there are a couple jogs to get around some unfinished dirt sections that are not worth it unless you're on a full squish 29er downhill rig. Riding around Lake Elsinore is just awful. I do it a couple times a year because of brevets. Heading south to Murrieta on the west side of the lake is interesting. No shoulder, sub-standard lane width, and the road is always dirty. Bonus hard man points if you do it at night by yourself. I swear you can hear banjos playing in the background.