Participants from the Washington metropolitan area and as far away as New York braved a hot sun and a track that left many runners complaining of hot feet in the annual Potomac Valley AAU championships at Coolidge High School yesterday.

Competition continues today, starting at 11 a.m.

Gary Judd opened the meet with a victory in the 25-lap, 10,000-meter race. George Vernasky captured the men's masters 10,000 and Jill Cotten, the women's 10,000.

In women's events New York City's Atoms Track Club took first and second in the 400-meter hurdles, won the 100 meters and 400 relay, and swept the first three places in the 400 meters.

Area winners included Anthony Fields in the 100 meters, with a time of 11.0, Raynah Adams in the men's masters 400 meters and Aileen O'Connor in the women's 1,500 meters.

Fields nipped Lloyd Jeremiah and Nathaniel Worthen. All three runners seemed to hit the tape together.

The best race featured Adams and Larry Colbert. Colbert led most of the way only to be overtaken by Adams 50 yards from the finish.

O'Connor, representing the Catholic Youth Organization, also ran the third leg on the winning two-mile relay team. A winner in five national championship events last year, O'Connor is scheduled to compete in next month's 3,000-meter race at the AAU championships in Los Angeles.