Common HO train layout plans include continuous-loop, point-to-point and loop-to-loop designs. The design of HO train layouts is dependent upon what owners want their trains to do, the type and manufacturer of the tracks and the size of the available space.
Basic continuous loop tracks are oval in shape, while other point-to-point designs imitate real railroads. For more variety in the layout, a loop-to-loop track features a combination of two loops with a single-track connection. Other common designs are ovals that also include a track to reverse direction of the train or an oval with two sidings at different locations along the track. Hobbyists may also find sample train layouts and other instructional information available for purchase from local and online retailers.