1970 USAC Championship Car season
The 1970 USAC Championship Car season consisted of 18 races, beginning in Avondale, Arizona on March 28 and concluding at the same location on November 21. There was also one non-championship event at Pikes Peak, Colorado. The USAC National Champion and Indianapolis 500 winner was Al Unser. After this season, dirt courses did not reappear in the USAC Championship until 1981-82. Road courses after this season did not reappear in the USAC Championship until 1977. The Pikes Peak Auto Hill Climb was the only non-championship event.
Schedule and results
| Rnd | Date | Race Name | Length | Track | Location | Type | Pole Position | Winning Driver |
| 1 | March 28 |  Phoenix 150 | Phoenix International Raceway | Avondale, Arizona | Paved | Mario Andretti | Al Unser | |
| 2 | April 4 | Golden Gate 150 | Sears Point Raceway | Sonoma, California | Road | Mark Donohue | Dan Gurney | |
| 3 | April 26 | Trenton 200 | Trenton International Speedway | Trenton, New Jersey | Paved | Al Unser | Lloyd Ruby | |
| 4 | May 30 | International 500 Mile Sweepstakes | Indianapolis Motor Speedway | Speedway, Indiana | Paved | Al Unser | Al Unser | |
| 5 | June 7 | Rex Mays Classic | Wisconsin State Fair Park Speedway | West Allis, Wisconsin | Paved | Mario Andretti | Joe Leonard | |
| 6 | June 14 | Langhorne 150 | Langhorne Speedway | Langhorne, Pennsylvania | Paved | Bobby Unser | Bobby Unser | |
| 7 | June 28 | Rocky Mountain 150 | Continental Divide Raceways | Mead, Colorado | Road | Al Unser | Mario Andretti | |
| 8 | July 4 | Michigan Twin 200s | Michigan International Speedway | Brooklyn, Michigan | Paved | Gary Bettenhausen | Gary Bettenhausen | |
| NC | July 4 | Pikes Peak Auto Hill Climb | Pikes Peak Highway | Pikes Peak, Colorado | Hill | Orville Nance | Ted Foltz | |
| 9 | July 26 | Indy 150 | Indianapolis Raceway Park | Clermont, Indiana | Road | Mario Andretti | Al Unser | |
| 10 | August 22 | Tony Bettenhausen 100 | Illinois State Fairgrounds | Springfield, Illinois | Dirt | Larry Dickson | Al Unser | |
| 11 | August 23 | Tony Bettenhausen 200 | Wisconsin State Fair Park Speedway | West Allis, Wisconsin | Paved | Al Unser | Al Unser | |
| 12 | September 6 | California 500 | Ontario Motor Speedway | Ontario, California | Paved | Lloyd Ruby | Jim McElreath | |
| 13 | September 7 | Ted Horn Memorial 100 | DuQuoin State Fairgrounds | Du Quoin, Illinois | Dirt | Al Unser | Al Unser | |
| 14 | September 12 | Hoosier Hundred | Indiana State Fairgrounds | Indianapolis, Indiana | Dirt | Johnny Parsons | Al Unser | |
| 15 | September 19 | Sedalia 100 | State Fair Raceway | Sedalia, Missouri | Dirt | Al Unser | Al Unser | |
| 16 | October 3 | Trenton 300 | Trenton International Speedway | Trenton, New Jersey | Paved | Al Unser | Al Unser | |
| 17 | October 4 | Golden State 100 | California State Fairgrounds | Sacramento, California | Dirt | Mario Andretti | Al Unser | |
| 18 | November 21 | Bobby Ball 150 | Phoenix International Raceway | Avondale, Arizona | Paved | Al Unser | Swede Savage |
No pole is awarded for the Pikes Peak Hill Climb, in this schedule on the pole is the driver who started first. No lap led was awarded for the Pikes Peak Hill Climb, however, a lap was awarded to the drivers that completed the climb.
Scheduled for 300 miles, stopped early due to rain.