Here’s how to watch the Monster Energy NASCAR Cup Series 2019 race Overton’s 400 Live Stream Online: When: Sunday, July 30, at 3 p.m. ET Live Stream: NBC Sports Live Extra. The NASCAR Cup Series is live from Chicagoland Speedway. Overton’s 400 Live stream the Camping World 400 on NBCSports and the NBC Sports app. Check out episodes of NASCAR Racing by season. Don’t miss any episodes, set your DVR to record NASCAR Racing.