The 2017 ISM Connect 300 was a Monster Energy NASCAR Cup Series race held on September 24, 2017, at New Hampshire Motor Speedway in Loudon, New Hampshire. Contested over 300 laps on the speedway, it was the 28th race of the 2017 Monster Energy NASCAR Cup Series season, the second race of the Playoffs, and the second race of the Round of 16.
Kyle Larson was the fastest in the first practice session with a time of 28.065 seconds and a speed of .
Kyle Larson was the fastest in the second practice session with a time of 28.727 and a speed of .
Martin Truex Jr. was the fastest in the final practice session with a time of 28.932 and a speed of .
Kyle Busch scored the pole for the race with a time of 28.203 and a speed of .
Stage 1 Laps: 75
Stage 2 Laps: 75
Stage 3 Laps: 150
NBC Sports covered the race on the television side. Rick Allen, Jeff Burton and Steve Letarte had the call in the booth for the race. Parker Kligerman, Marty Snider, and Kelli Stavast reported from pit lane during the race.
The Performance Racing Network had the radio call for the race, which was simulcast on Sirius XM NASCAR Radio.