The New Mexico–New Mexico State football rivalry, known as the Battle of I-25 and the Rio Grande Rivalry in all sports, is an annual football game between the University of New Mexico and New Mexico State University. It is called the Battle of I-25 because the two universities are located along Interstate 25 connecting Albuquerque and Las Cruces. In the entire history of the rivalry, the game has never been contested anywhere beside those two cities.