Round | Circuit | Date | Winner | Vehicle * | Entrant |
---|---|---|---|---|---|
1 | Lime Rock Park | 1973.05.05 | Tui BH3 - Volkswagen | ||
2 | Watkins Glen | 1973.05.16 | Tui BH3 - Volkswagen | ||
3 | Road Atlanta | 1973.07.08 | Royale RP14 - Volkswagen | ||
4 | Watkins Glen | 1973.07.22 | Tui BH3 - Volkswagen | ||
5 | Road Atlanta | 1973.08.26 | Lola T252 - Volkswagen | ||
6 | Pocono | 1973.09.03 | Royale RP18 - Volkswagen | ||
7 | Seattle | 1973.09.30 | Lola T252 - Volkswagen | ||
8 | Laguna Seca | 1973.10.14 | Lola T252 - Volkswagen | ||
9 | Riverside | 1973.10.28 | Royale RP18 - Volkswagen |