The 2025 Mobil 1 301 was a NASCAR Cup Series race held on September 21, 2025, at New Hampshire Motor Speedway in Loudon, New Hampshire on the speedway. It was the 30th race of the 2025 NASCAR Cup Series season, and the fourth race of the playoffs, and the first race in the Round of 12.
Ryan Blaney won the race. Josh Berry finished 2nd, and William Byron finished 3rd. Joey Logano and Chase Elliott rounded out the top five, and Christopher Bell, Kyle Larson, Michael McDowell, Ross Chastain, and Chase Briscoe rounded out the top ten.
New Hampshire Motor Speedway is a oval speedway located in Loudon, New Hampshire, which has hosted NASCAR racing annually since the early 1990s, as well as the longest-running motorcycle race in North America, the Loudon Classic. Nicknamed "The Magic Mile", the speedway is often converted into a road course, which includes much of the oval.
The track was originally the site of Bryar Motorsports Park before being purchased and redeveloped by Bob Bahre. The track is currently one of eight major NASCAR tracks owned and operated by Speedway Motorsports.
William Byron was the fastest in the practice session with a time of 29.795 seconds and a speed of .
Joey Logano scored the pole for the race with a time of 29.159 and a speed of .
Stage One Laps: 70
Stage Two Laps: 115
Stage Three Laps: 116
USA covered the race on the television side. Leigh Diffey, four-time and all-time Loudon winner Jeff Burton and Steve Letarte called the race from the broadcast booth. Kim Coon, Marty Snider and Dillon Welch handled the pit road duties from pit lane.
PRN had the radio call for the race, which was also simulcast on Sirius XM NASCAR Radio. Brad Gillie and Mark Garrow called the race from the booth when the field races down the frontstretch. Rob Albright called the race from turns 1 & 2 and Pat Patterson called the race from turns 3 & 4. Brett McMillan, Heather DeBeaux and Alan Cavanna handled the duties on pit lane.