The closest airport is in El Paso, TX, about 85 miles (136.79 km) from the monument. The nearest gas station is located in Alamogordo, which is 15 miles (24 km) east of the monument. Las Cruces is 52 miles (84 km) from the monument.
The park open's after sunrise but, backpack permits on a first come basis are available. More information about the park is avail at: https://www.nps.gov/whsa/planyourvisit/basicinfo.htm
Fall is magical at White Sands National Monument in the U.S. State of New Mexico.