We have moved the Season 1 story races to the Season 1 Mission list, and have removed the races section from the app. You can find the races by going to Missions > Story Missions and scrolling down to the bottom of the Season 1 section. This is the help make sure that people don't miss this important part of the story.
This does not affect Virtual Races or any other mission category. We haven't changed how they work: Abel Runner's Club members can run them all immediately, while free users can use their weekly unlock to get access.