Twin Lakes is a Fairfax County Park system course south of I-66 between Centerville Road and the Fairfax County Parkway.

There are two completely different golf courses here, designed and redesigned by Denis Griffiths. The Oaks Course is a parkland-style layout carved through the oak trees. It's slightly longer and a shot-maker's layout with narrow fairways, 56 sand traps, seven water hazards, and small, well-protected greens. There are four sets of tees, and the tips play to 6,715 yards, 76.3/137, course/slope ratings.

The Lakes Course is the original layout. It is more open off the tee, with a scattering of trees along the fairways and a couple of lakes to navigate. From the tips, it plays to 6,695 yards, 72.1/126 course/slope ratings, and three shorter tees.