A 1.8 mile track was used on the 5th November 1950 for the first meeting (see above map), but it was extended to 2.1 miles for the second meeting on 27th May 1951 (it took the left fork to the top left of the map to Stevenson Drive before turning right and rejoining the original track) when the course was improved by the Del Monte Properties Company, which removed several pine trees along the route and erected some fences for spectator control and safety precautions. It used for Sportscar races and other American series races in the 1950s. It had been originally conceived as a 3.8 mile course, but the proposed layout was considered to be too fast.