I don't know where you are looking and what type of track sections you are looking for here are some below:
http://www.nassauhobby.com/XC4...s-Track-Accessories/
http://www.petersensupply.com/category-s/81.htm
http://www.publicdeliverytrack.com/track/
http://www.trainworld.com/sear...ry=92&byscale=37
http://www.nicholassmithtrains...6-TRACK-ACCESSORIES/