NASCAR Cup Series 2023 14 2023-04-30 2023-04-30 https://r2.thesportsdb.com/images/media/event/thumb/307l501681831137.jpg https://r2.thesportsdb.com/images/media/event/poster/h9nwen1681830899.jpg The Würth 400 is a 400-mile (640 km) NASCAR Cup Series stock car race held annually at Dover Motor Speedway in Dover, Delaware in the spring. In September 2021, RelaDyne bought the Drydene brand which was the title sponsor of the race. The company added another one of their brands, DuraMAX, to the title sponsor of the race. RelaDyne was also included in the name of the race as a presenting sponsor. As a result, in 2022, the name of the race became the DuraMAX Drydene 400 presented by RelaDyne. In 2023, Würth, which has been a sponsor on Team Penske's NASCAR Cup and Xfinity Series cars for a few races each year since 2012, became the title sponsor of the "Monster Mile" race. 1804673