The 2019 Boyd Gaming 300 was a NASCAR Xfinity Series race held on March 2, 2019, at Las Vegas Motor Speedway in Las Vegas. Contested over 213 laps due to an overtime finish on the asphalt intermediate speedway, it was the third race of the 2019 NASCAR Xfinity Series season.
Justin Allgaier was the fastest in the first practice session with a time of 30.212 seconds and a speed of .
Justin Haley was the fastest in the final practice session with a time of 29.949 seconds and a speed of .
Qualifying was canceled due to rain. Cole Custer was awarded the pole for the second consecutive race due to 2018 owner's points. Again, Chad Finchum qualified 2nd.
Stage One Laps: 45
Stage Two Laps: 45
Stage Three Laps: 123