Lionel FasTrack offers innovation, variety, ease-of-use, and an incredible prototypical look. Bring your layout to life like never before! Snaps together, no pins, and flipping tracks around is easy! Pairing up your trains with the right track is important. O Fastrack is Lionel’s most popular track system, featuring 3 rail construction and realistic roadbed. Check out the Lionel FasTrack overview & how many Lionel FasTrack curves in a circle of track in all different radiuses and some helpful videos below!