The distance between Xi'an and Chengdu is approximately 658 to 726 kilometers (409 to 451 miles), depending on the mode of transport and specific route taken. The most efficient way to travel between these two major cities is via the Xi'an-Chengdu High-Speed Railway, which covers a running distance of about 658 kilometers and has significantly reduced travel time to between 3 and 4.5 hours. For those traveling by road, the driving distance is roughly 713 kilometers (443 miles), typically taking about 7 to 10 hours depending on traffic and speed. While direct flights are available and take about 90 minutes in the air, the total travel time often equals or exceeds that of the high-speed train when factoring in airport transfers and potential delays. For a more budget-friendly but much slower option, normal-speed trains still operate the route, covering the distance in 10 to 16 hours.