On January 10, 2010, Union Pacific operated a double-stack container train that was 18,061 feet in length, or about 3.42 miles long. The total weight was 15,498 tons. This train was a test of sorts for the Union Pacific. It had several locomotives distributed throughout the train, also known as DPUs, or distributed power units. It originated in Dallas, TX on January 8, and was destined for Long Beach, CA. I was able to see it at the San Timoteo Canyon in the Beaumont Pass area located at the border of San Bernardino County and Riverside County, about 65 miles east of Los Angeles.