436.9 kilometers.

According to Baidu Map query, the distance between Chengdu and Xichang is 436.9 kilometers, and it takes 5 hours and 38 minutes to drive there, passing through Ya'an and other places.

Chengdu, referred to as "Rong", also known as Rongcheng and Jincheng, is a prefecture-level city under the jurisdiction of Sichuan Province, a provincial capital, a sub-provincial city, a megacity, a national central city, and the world's gourmet capital.