Premise: New Hampshire Motor Speedway is a 1.058 mi oval speedway located in Loudon, New Hampshire, which has hosted NASCAR racing annually since the early 1990s, as well as the longest-running motorcycle race in North America, the Loudon Classic. Nicknamed "The Magic Mile", the speedway is often converted into a 1.6 mi road course, which includes much of the oval.
Hypothesis: The speedway with an oval shape is many times made 1.6 mi in length, but the beginning length is 1.058 mi oval.