As of 2015, the top model railroad show in America is Trainfest in Wisconsin. The top travelling model railroad show is The Great Train Show. Both feature displays, exhibits and vendors all focusing on the model train hobby.
Typically taking place later in the year around November, Trainfest draws very large crowds, from people just getting started in the hobby to more experienced people looking for rare pieces to add to their collection.
The Great Train Show travels to many different states throughout the year and its schedule is found many months in advance on its official website. Similar to Trainfest, the show caters to a large gathering of enthusiasts from all ages and experience levels.