The 2021 IMSA WeatherTech Sportscar Championship 59th edition of the Rolex 24 Hours at Daytona International Speedway delivered NBC and NBCSN’s largest viewership numbers over the Saturday and Sunday of the race which was won for a third consecutive and fourth overall win with a viewership of an average of 1.1 million, the largest telecast of the race since 2008.

IMSA President John Doonan said:

Dear IMSA Stakeholders, Partners and Friends-
As you likely recall, we closed out the 2020 IMSA WeatherTech SportsCar Championship season with significant momentum, as NBC Sports reported a 21 percent increase in television viewership year-over-year.
We are proud to report that we have continued that momentum into the 2021 season with record viewership numbers for last weekend’s 59th Rolex 24 At Daytona. Please find a news release from NBC Sports below detailing weekend viewership, including the fact that Sunday’s audience for the thrilling conclusion of the Rolex 24 was 1.1 million – the most viewed sporting event of the weekend.
These broadcast results represent the largest IMSA viewing audience we’ve had to date in our NBC relationship and was the largest for any IMSA race since the 2008 Rolex 24 At Daytona. This is a testament not only to your commitment to IMSA, but also the quality of the on-track product you delivered for our fans. It was nothing short of sensational, and sets us up for continued success as we head to Sebring and the rest of the 2021 season.
On behalf of all of us as IMSA, thank you again for your passionate support. None of this would be possible without you.
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