The 2018 Bar Harbor 200 was the 29th stock car race of the 2018 NASCAR Xfinity Series season, the third and final race in the Round of 12, and the 19th iteration of the event. The race was held on Saturday, October 6, in Dover, Delaware at Dover International Speedway, a 1 mile (1.6 km) permanent oval-shaped racetrack. The race took the scheduled 200 laps to complete. At race's end, Christopher Bell of Joe Gibbs Racing would dominate the race to win his seventh career NASCAR Xfinity Series win and his sixth of the season. To fill out the podium, Cole Custer of Stewart-Haas Racing with Biagi-DenBeste and Justin Allgaier of JR Motorsports would finish second and third, respectively.