The South Point 400 was the first race of the Cup Series playoffs round of eight, with Joey Logano going on to secure the victory and his place in the championship four.
The Formula 1 race was shown live on ABC, whilst NASCAR was able to be watched live on NBC, with the viewing figures now in.
There was absolutely no question which was more popular with viewers in the US, either, according to statistics revealed by Blackbook Motorsport.
According to their report, 2.23 million viewers watched Logano take the win at Las Vegas Motor Speedway, whilst in comparison, just 1.3 million viewers watched the F1 and Charles Leclerc take the checkered flag in Austin.
Whilst that figure represents a slight increase from 2023 for F1 (1.17M), the 2024 figure still remains lower than both the 2022 (1.34M) and 2021 (1.41M) data.
In that sense, viewership of F1 in the United States appears to be stagnating having grown above the million mark following Netflix's hit series Drive to Survive.
NASCAR's figures for the race in Vegas have remained consistent in recent years, meanwhile, all hitting the two million or more mark, apart from in 2020 which narrowly missed out (1.97M).
Whilst perhaps unsurprising, the above data re-affirms that F1 still has a long way to go before it catches up with NASCAR in terms of popularity in the United States, especially given the F1 figures are from a US race.