The drivers who run in the Indianapolis 500 take over downtown's streets. These cars have twin turbochargers in V6 engines that produce speeds of more than 230 mph on the fastest ovals. Speeds here will top out at about 180 mph but, at up to 700 horsepower, they're still really loud and fast.
Prospects run in slightly less powerful versions of IndyCars. They run 2.0-liter turbo engines in a new Dallara IL-15 chassis, producing about 450 horsepower. They race Saturday and Sunday, the first two in their 18-race season.
The next step down from the Indy Lights, this series runs 260-horsepower engines. They also open their 16-race slate with races Saturday and Sunday.
The first step on the official Road to Indy ladder, these cars produce about 170 horsepower. They also open with a doubleheader this weekend and have 16 races this season.
Stadium Super Trucks
This series has a doubleheader here, the only Florida stop in a schedule that takes the series to five states, Ontario, and Australia and New Zealand. The trucks do something during their races you won't see in any other series here: jump over ramps.
Pirelli World Challenge
The sportscar series runs a doubleheader here. Racers in the top class, Grand Touring, crank out 425-525 horsepower. There are six other classes in the series but only the four GT divisions will race here.
Sunday: Grand Prix of St. Petersburg
12:30 p.m., Ch. 28
Streets of St. Petersburg, 1.8-mile course
Comment: Juan Montoya got past teammate Will Power during a pit stop sequence last year to continue Team Penske's dominance here.
April 2: Phoenix Grand Prix
8 p.m. NBCSN
Phoenix International Raceway, Avondale, Ariz., 1-mile oval
Comment: The series has not raced on the fast, flat desert oval since 2005; Tony Kanaan is a two-time winner.
April 17: Grand Prix of Long Beach 4 p.m., NBCSN
Streets of Long Beach, Calif., 1.968-mile course
Comment: Scott Dixon finally broke through for his first Long Beach victory last year in nine tries, including two in Champ Car.
April 24: Grand Prix of Alabama
3 p.m., NBCSN
Barber Motorsports Park, Birmingham, 2.38-mile road course
Comment: Josef Newgarden earned his first series victory here last year, leading the final 21 laps and headlining an American 1-2 finish.
May 14: Grand Prix of Indianapolis
3:30 p.m., Ch. 28
Indianapolis Motor Speedway, 2.434-mile road course
Comment: This race has quickly become prestigious; look for some drivers on one-race deals trying to stand out.
May 29: Indianapolis 500
Noon, Ch. 28
Indianapolis Motor Speedway, 2½-mile oval
Comment: This year's event is sure to engender even more ceremony than usual — it's the 100th edition of the "Greatest Spectacle in Racing."
June 4-5: Dual in Detroit
Race 1: 3:30 p.m. June 4, Ch. 28
Race 2: 3:30 p.m. June 5, Ch. 28
Belle Isle Park, 2.1-mile street course
Comment: This is the fourth Detroit doubleheader; St. Petersburg resident Sebastien Bourdais and first-timer Carlos Munoz won in 2015.
June 11: Firestone 600
8 p.m., NBCSN
Texas Motor Speedway, Fort Worth, 1½-mile quad oval
Comment: Chip Ganassi Racing recorded a 1-2 here last year with Scott Dixon winning and Tony Kanaan finishing second.
June 26: Road America race
12:30 p.m., NBCSN
Road America, Elkhart Lake, Wis., 4.048-mile road course
Comment: This is the IndyCar series debut at the undulating circuit, a CART/Champ Car favorite from 1982-2007.
July 10: Iowa Corn 300
5 p.m., NBCSN
Iowa Speedway, Newton, 0.875-mile oval
Comment: Andretti Autosport has owned this tight oval, winning the past six races including three by Ryan-Hunter Reay.
July 17: Indy Toronto
3 p.m., CNBC
Streets of Toronto, 1.75-mile course
Comment: A team outside the Penske/Ganassi/Andretti power circle has won the past three here including Josef Newgarden in 2015.
July 31: Indy 200 at Mid-Ohio
2 p.m., CNBC
Mid-Ohio Sports Car Course, Lexington, 2.258-mile road course
Comment: Ohioan Graham Rahal — wearing an Ohio State football style racing helmet, no less — scored a popular win here last year.
Aug. 21: ABC Supply 500
3 p.m., NBCSN
Pocono Raceway, Long Pond, Pa., 2½-mile tri-oval
Comment: This was the site of Justin Wilson's tragic death last year when he was hit by debris from another wreck.
Sept. 4: Grand Prix of Boston
2 p.m., NBCSN
Streets of Boston, 2.25-mile course
Comment: This is the debut event on the 11-turn South Boston course around the Boston Convention & Exhibition Center.
Sept. 18: Grand Prix of Sonoma
7 p.m., NBCSN
Infineon Raceway, Sonoma, Calif., 2.303-mile road course
Comment: Scott Dixon wrapped up his fourth title last year with his victory here, his second in a row and third overall in California's wine country.
Jim Tomlin, Times staff writer