Is there a gift shop at nascar speedway

Yes, at Smith Towers

Yes, there is at Smith Towers just outside the oval track

Yes

Plus during races if you support the vendors a lot of them are raising money for various charities. They are usually manned by volunteers.

Yes they have a large one at the Smith Tower, which is the blue octagon shaped building, right in front of the main entrance at Highway 29 and Speedway Boulevard. During race events, there are souvenir and collectible trailers all over the place.

Yes. There's a good variety of items.