| Date | Champ Car | Formula One | ALMS | IndyCar |
| February 1 | | | |  Miami, FL
(Tuesday 27)
Homestead-Miami Speedway
Open Test Tuesday 27 through Thursday 29 |
| February 8 | Sebring, FL
(Wednesday 4)
Spring Training
Wednesday 4 through Friday 6
CANCELED | | | |
| February 15 | | | | Phoenix, AZ
(Tuesday 10)
Phoenix International Raceway
Open Test Tuesday 10 through Thursday 12 |
| February 22 | St. Petersburg, FL
Grand Prix of St. Petersburg
2003 winner: Paul Tracy
CANCELED | | | |
| February 29 | | | | Miami, FL
Toyota Indy 300
2003 winner: Scott Dixon
 1:00pm
Infiniti Pro Series support race |
| March 7 | | Melbourne
Grand Prix of Australia
2003 winner: David Coulthard
 Saturday 6, 9:30pm | | |
| March 14 | Monterey, CA
Spring Training
Sunday 14 through Tuesday 16 | | | |
| March 21 | | Kuala Lumpur
Grand Prix of Malaysia
2003 winner: Kimi Räikkönen
1:30am | Sebring, FL
(Saturday 20)
12 Hours of Sebring
2003 winner: Biela/Peter/Werner
| Phoenix, AZ
Phoenix Indy 200
2003 winner: Tony Kanaan
 4:00pm
Infiniti Pro Series support race |
| March 28 | | | | |
| April 4 | | Bahrain
Grand Prix of Bahrain
Inaugural event
| | |
| April 11 | | | | |
| April 18 | Long Beach, CA
Toyota Grand Prix of Long Beach
2003 winner: Paul Tracy
Toyota Atlantic support race | | | Motegi, Japan
(Saturday 17)
Indy Japan 300
2003 winner: Scott Sharp
 Saturday 17, 12:30pm |
| April 25 | | Imola, Italy
Grand Prix of San Marino
2003 winner: Michael Schumacher
7:30am
Formula 3000 support race | | |
| May 2 | | | | |
| May 9 | | Barcelona
Grand Prix of Spain
2003 winner: Michael Schumacher
7:30am
Formula 3000 support race | | |
| May 16 | St. Petersburg, FL
Grand Prix of St. Petersburg
2003 winner: Paul Tracy | | | Indianapolis, IN
Indy 500 Pole Day
Time trials Saturday 15 & Sunday 16 |
| May 23 | Monterrey, Mexico
Tecate Telmex Grand Prix Presented by Herdez
2003 winner: Paul Tracy
Toyota Atlantic support race | Monte Carlo
Grand Prix of Monaco
2003 winner: Juan Pablo Montoya
7:30am
Formula 3000 support race | | Indianapolis, IN
Indy 500 Bump Day
Time trials Saturday 22 & Sunday 23 |
| May 30 | | Nürburgring, Germany
Grand Prix of Europe
2003 winner: Ralf Schumacher
7:30am
Formula 3000 support race | | Indianapolis, IN
Indy 500
2003 winner: Gil de Ferran
|
| June 6 | Milwaukee, WI
(Saturday 5)
Milwaukee Mile
2003 winner: Michel Jourdain Jr.
Toyota Atlantic support race | | | |
| June 13 | | Montreal
Grand Prix of Canada
2003 winner: Michael Schumacher
12:30pm | Le Mans, France
24 Hours of Le Mans
2003 winner: Kristensen/Capello/Smith
| Fort Worth, TX
(Saturday 12)
Bombadier 500
2003 winner: Al Unser Jr.
|
| June 20 | Portland, OR
G I Joe's 200
2003 winner: Adrián Fernández
Subject to final commercial terms, Toyota Atlantic support race | Indianapolis, IN
Grand Prix of USA
2003 winner: Michael Schumacher
1:30pm | | |
| June 27 | | | Lexington, OH
Mid-Ohio
| Richmond, VA
(Saturday 26)
SunTrust Indy Challenge
2003 winner: Scott Dixon
|
| July 4 | Cleveland, OH
(Saturday 3)
Grand Prix of Cleveland
2003 winner: Sébastien Bourdais
Toyota Atlantic support race | Magny-Cours
Grand Prix of France
2003 winner: Ralf Schumacher
7:30am
Formula 3000 support race | Lakeville, CT
(Monday 5)
Lime Rock
Inaugural event
| Kansas City, KS
Indy 200
2003 winner: Bryan Herta
Infiniti Pro Series support race |
| July 11 | Toronto, Canada
Molson Indy Toronto
2003 winner: Paul Tracy
Toyota Atlantic support race | Silverstone
Grand Prix of Great Britain
2003 winner: Rubens Barrichello
7:30am
Formula 3000 support race | | |
| July 18 | | | Sonoma, CA
Grand Prix of Sonoma
2003 winner: Leitzinger/Weaver
| Nashville, TN
(Saturday 17)
Firestone Indy 200
2003 winner: Gil de Ferran
Infiniti Pro Series support race |
| July 25 | Vancouver, Canada
Molson Indy Vancouver
2003 winner: Paul Tracy
Toyota Atlantic support race | Hockenheim
Grand Prix of Germany
2003 winner: Juan Pablo Montoya
7:30am
Formula 3000 support race | Portland, OR
Grand Prix of Portland
| Milwaukee, WI
Milwaukee
Inaugural event
Infiniti Pro Series support race |
| August 1 | | | | Brooklyn, MI
Firestone Indy 400
2003 winner: Alex Barron
Infiniti Pro Series support race |
| August 8 | Elkhart Lake, WI
Grand Prix at Road America
2003 winner: Bruno Junqueira
Toyota Atlantic support race | | Bowmanville, Canada
Grand Prix at Mosport
2003 winner: Biela/Werner
| |
| August 15 | Denver, CO
Grand Prix of Denver
2003 winner: Bruno Junqueira
Toyota Atlantic support race | Budapest
Grand Prix of Hungary
2003 winner: Fernando Alonso
7:30am
Formula 3000 support race | | Sparta, KY
Belterra Casino Indy 300
2003 winner: Sam Hornish Jr.
Infiniti Pro Series support race |
| August 22 | | | Elkhart Lake, WI
Road America 500
2003 winner: Herbert/Lehto
| Pikes Peak, CO
Honda Indy 225
2003 winner: Scott Dixon
Infiniti Pro Series support race |
| August 29 | Montreal, Canada
Molson Indy Montreal
2003 winner: Michel Jourdain Jr.
Toyota Atlantic support race | Spa-Francorchamps
Grand Prix of Belgium
7:30am
Formula 3000 support race | | Nazareth, PA
Firestone Indy 225
2003 winner: Helio Castroneves
|
| September 5 | | | | |
| September 12 | Monterey, CA
Grand Prix of Monterey
2003 winner: Patrick Carpentier
Toyota Atlantic support race | Monza
Grand Prix of Italy
2003 winner: Michael Schumacher
7:30am
Formula 3000 support race | | Joliet, IL
Delphi Indy 300
2003 winner: Sam Hornish Jr.
Infiniti Pro Series support race |
| September 19 | | | | |
| September 26 | | Shanghai
Grand Prix of China
Inaugural event
| Braselton, GA
(Saturday 25)
Petit Le Mans
2003 winner: Herbert/Lehto/Johansson
| |
| October 3 | Durban, South Africa
Grand Prix of Durban
Inaugural event
Date to be confirmed | | | Fontana, CA
Toyota Indy 400
2003 winner: Sam Hornish Jr.
Infiniti Pro Series support race |
| October 10 | | Suzuka
Grand Prix of Japan
2003 winner: Rubens Barrichello
1:00am | | |
| October 17 | Seoul, South Korea
Grand Prix of South Korea
Inaugural event
Date to be confirmed | | Laguna Seca, CA
(Saturday 16)
Monterey Sports Car Championships
2003 winner: Biela/Werner
 | Fort Worth, TX
Chevy 500
2003 winner: Gil de Ferran
Infiniti Pro Series support race |
| October 24 | Surfers Paradise, Australia
Lexmark Indy 300
2003 winner: Ryan Hunter-Reay | São Paulo
Grand Prix of Brazil
2003 winner: Giancarlo Fisichella
11:30am | | |
| October 31 | Fontana, CA
The 500
CANCELED | | | |
| November 7 | Mexico City, Mexico
Gran Premio Mexico
2003 winner: Paul Tracy
Date to be confirmed | | | |
| November 14 | Las Vegas, NV
Grand Prix of Las Vegas
Inaugural event
Venue to be confirmed, Toyota Atlantic support race |