Coverage of the Shell Belgian Grand Prix begins on Friday with live practice on NBCSN at 8 a.m. ET. Live streaming coverage of qualifying can be seen on NBC Sports Live Extra, NBC Sports Group's live streaming product for desktops, mobile devices and tablets, on Saturday at 8 a.m. ET, and on NBCSN at 12:30 p.m. ET. Sunday's live coverage of the Shell Belgian Grand Prix on NBCSN begins at 7:30 a.m. ET.
NBCSN's coverage of the GoPro Grand Prix of Sonoma starts with qualifying on Saturday at 9 p.m. ET. NBCSN's live telecast of the GoPro Grand Prix of Sonoma airs Sunday at 4 p.m.
NBCSN and NBC Sports Live Extra will combine to provide live AMA Motocross coverage this Saturday from Lake Elsinore, Calif. Live coverage starts on NBC Sports Live Extra at 1 p.m. ET and will also air on NBCSN at 3:30 p.m. ET.
ARCA Racing rounds out NBC Sports Group's motorsports coverage this weekend on Friday at 11 p.m. on NBCSN.
Here's the weekend menu from NBC Group:
F1 Shell Belgian Grand Prix , Practice, NBCSN, 8 a.m.
ARCA Racing, NBCSN, 11 p.m.
F1 Shell Belgian Grand Prix, Practice (Encore), NBCSN, 1 a.m.
F1 Shell Belgian Grand Prix, Qualifying (Live), NBC Sports Live Extra (online), 8 a.m.
F1 Shell Belgian Grand Prix, Qualifying, NBCSN 12:30 p.m.
AMA Motocross, NBC Sports Live Extra (online), 1 p.m.
AMA Motocross, NBCSN, 3:30 p.m.
AMA Motocross, NBC Sports Live Extra, 5:30 p.m.
IndyCar GoPro Grand Prix of Sonoma , Qualifying, NBCSN, 9 p.m.
AMA Motocross (Encore), NBCSN, 10 p.m.
F1 Shell Belgian Grand Prix, Qualifying (Encore), NBCSN, 1 a.m.
F1 Shell Belgian, Grand Prix, NBCSN, 7:30 a.m.
F1 Extra, NBCSN, 10 a.m.
GoPro Grand Prix of Sonoma, NBCSN, 4 p.m.
Commentators: NBC Sports Group's IndyCar and Formula One play-by-play voice Leigh Diffey will call the GoPro Grand Prix of Sonoma. Diffey will be joined in the booth this week by former drivers Townsend Bell and Wally Dallenbach. Reporters Jon Beekhuis, Kevin Lee, Marty Snider and Robin Miller will manage the pits.
Veteran motorsports broadcaster Bob Varsha will call the Shell Belgian Grand Prix. He will be joined by veteran analyst and former racecar driver David Hobbs, and analyst and former race mechanic for the Benetton F1 team Steve Matchett. F1 insider Will Buxton will serve as the team's on-site reporter from Circuit de Spa-Francorchamps in Belgium.
Jason Weigandt, Jeff Emig and Kelli Stavast will provide AMA Motocross coverage from Lake Elsinore National in Lake Elsinore, Calif. on Saturday afternoon.
Rick Benjamin, Andy Hillenburg and Kevin Lee have the call of the Allen Crowe 100 from the Illinois State Fairgrounds on Friday night.
NBC Sports Live Extra: NBC Sports Group's live streaming can be accessed at NBCSports.com/liveextra. The NBC Sports Live Extra app for mobile devices and tablets is available at the App Store for iPhone, iPad and iPod touch, and on select Android handset and tablet devices within Google Play.