The 1968 Canadian-American Challenge Cup was the third season of the Can-Am auto racing series. It consisted of FIA Group 7 racing cars running two-hour sprint events. It began September 1, 1968, and ended November 10, 1968, after six rounds.
| Rnd | Race | Circuit | Date |
|---|---|---|---|
| 1 | Road America Can-Am | Road America | September 1 |
| 2 | Bridgehampton Grand Prix | Bridgehampton Race Circuit | September 15 |
| 3 | Klondike Trail 200 | Edmonton Speedway Park | September 29 |
| 4 | Monterey Grand Prix | Laguna Seca Raceway | October 13 |
| 5 | Los Angeles Times Grand Prix | Riverside International Raceway | October 27 |
| 6 | Stardust Grand Prix | Stardust International Raceway | November 10 |
| Rnd | Circuit | Winning Team | Results |
|---|---|---|---|
| Winning Driver | |||
| 1 | Road America |  #5 Bruce McLaren Motor Racing
|
Results |
 Denny Hulme
| |||
| 2 | Bridgehampton |  #6 Roger Penske Racing
|
Results |
| Mark Donohue
| |||
| 3 | Edmonton | #5 Bruce McLaren Motor Racing
|
Results |
| Denny Hulme
| |||
| 4 | Laguna Seca |  #62 John Cannon
|
Results |
| John Cannon
| |||
| 5 | Riverside | #4 Bruce McLaren Motor Racing
|
Results |
| Bruce McLaren
| |||
| 6 | Stardust | #5 Bruce McLaren Motor Racing
|
Results |
| Denny Hulme
|
Points are awarded to the top six finishers in the order of 9-6-4-3-2-1.