Site information:

Just off of Hwy 50, in the entrance to the parking lot for Adventure Mountain recreation area.

A faint outline of the oval track can bee seen in the parking lot area using satellite view imagery.  Center of the track would be right about here:

38.812318, -120.033372

Plaque information:

State plaque

38.814295,-120.034209

Plaque text:

Site of Echo Summit

In 1968, Echo Summit servied as a high-altitude training center and site of the U.S. Olympic men's track and field trials. Four world records were shattered here on the track carved out of the El Dorado National Forest. The U.S. team selected for the 1968 Olympic games in Mexico City was celebrated worldwide for its athletic dominance and deep commitment to racial equality.

Registered November 8, 2013. Plaque placed by California State Parks in cooperation with the United States Forest Service.

Registered 12/2/2013