Anne and I went for a run around Lake Perris today. Just under 9 miles, the loop around the lake is 2/3 paved, 1/3 dirt/grassy double wide trail (south and east sides of lake) with a neat short hilly single track trail at the southwest end of the 2 mile long dam. The day use parking fee is $8 which is a little steep for what the State park has to offer (compared to other State Parks like Torrey Pines ) but still a nice run in the middle of Moreno Valley.