Length of the U.S. highspeed rail network 2021, by section
As of 2021, the Northeast corridor linking Boston with Washington DC was the longest and only highspeed rail line in use in the United States, representing a network of nearly 735 kilometers. Other highspeed rail projects are planned for the following decades, with the Bakersfield-to-Anaheim line planned for construction in 2033. Of these projects, the Denver-to-Albuquerque line is expected to be the longest with 560 kilometers.
