1968 / USAC National Championship Trail
Mar
17
1968 USAC California 200
Kings Speedway
Mar
31
1968 USAC Stardust 150
Caesars Palace
Apr
7
1968 USAC Jimmy Bryan Memorial
Phoenix International Raceway
Apr
21
1968 USAC Trenton 150
Trenton Speedway
May
30
1968 USAC Indianapolis 500
Indianapolis Motor Speedway
Jun
9
1968 USAC Rex Mays 150
The Milwaukee Mile Speedway
Jun
15
1968 USAC Telegraph Trophy 200 Heat 1
Mosport Park
Jun
16
1968 USAC Telegraph Trophy 200 Heat 2
Mosport Park
Jun
23
1968 USAC Langhorne 150
Langhorne Speedway
Jul
7
1968 USAC Rocky Mountain 150
Castle Rock Speedway
Jul
13
1968 USAC Nazareth 100
Nazareth Speedway
Jul
21
1968 USAC Indianapolis 100 Heat 1
Indianapolis Motor Speedway
Jul
22
1968 USAC Indianapolis 100 Heat 2
Indianapolis Motor Speedway
Jul
28
1968 USAC Langhorne 100 Heat 1
Langhorne Speedway
Jul
29
1968 USAC Langhorne 100 Heat 2
Langhorne Speedway
Aug
4
1968 USAC St.Jovite 100 Heat 1
Circuit Mont-Tremblant
Aug
5
1968 USAC St.Jovite 100 Heat 2
Circuit Mont-Tremblant
Aug
17
1968 USAC Bettenhausen Memorial 100
Springfield Raceway
Aug
18
1968 USAC Tony Bettenhausen 200
The Milwaukee Mile Speedway
Sep
2
1968 USAC Ted Horn Memorial 100
DuQuoin State Fairgrounds
Sep
7
1968 USAC Hoosier Hundred
Indiana State Fairgrounds
Sep
22
1968 USAC Trenton 200
Trenton Speedway
Sep
29
1968 USAC Golden State 100
Sacramento Raceway Park
Oct
13
1968 USAC Michigan Inaugural 250
Michigan International Speedway
Nov
3
1968 USAC California 250
Kings Speedway
Nov
17
1968 USAC Bobby Ball 200
Phoenix International Raceway
Dec
1
1968 USAC Rex Mays 300
Riverside International Raceway