On Running released the On Cloud X officially on November 4th. I got my hands on a pair on October 31st. I discovered them while researching new shoes after exceeding 350 miles on my previous On Cloud Flow shoes. I intended to get the same pair but when I ran a search for On Cloud Running Shoes through a search engine I saw a listing for the Cloud X which surprised me. There was no mention of the shoes on the On Running website, just on Road Runner Sports and a few other sites. Naturally, I had to try them out.