The United States track and field team won three gold medals, a silver and a bronze at the Spartakiade today.

John Powell won the discus, Wardell Gilbreath the 200 meters and Henry Marsh the 3,000-meter steeplechase.

Powell was only fifth going into his last throw, but he erupted with a tremendous shout and took the gold with a heave of 206 feet 9 1/2 inches.

Gilbreath was an underdog in the 200 meters, but dominated the race with a clocking of 20.84 seconds. Favored teammate Don Coleman, second at the AAU championships, was a distant silver medalist in 21.05.

Marsh had been trailing the pack throughout the steeplechase but the 25-year-old runner from Eugene, Ore., stunned the crowd -- estimated at 2,000 in the 106,000 seat stadium with a rally on the last lap to win by several yards in 8:28.09.

Olympic star Nelli Kim put on a magnificent freestyle gymnastics show, but it wasn't quite enough to overtake her Soviet Union teammate, Natalia Shaposhnikova, for the Spartakiade all-around title.

Kim got the two highest marks of the night -- 9.9 points out of a possible 10 in floor exercises and 9.85 in the vault -- to captivate a crowd of 5,000 at the Central Sports Hall and jump from fourth to second in the overall standings.

But Shaposhnikova, 18, of Rostov, who won the compulsory exercises Monday, kept her poise and placed 77.65 points, one-half point ahead of first in the overall standings with Kim.

American rowers Elizabeth Kent and Mary Ann Welsh finished fifth in a six-boat field in the "petite finals" of the pairs without coxswain. CAPTION: Picture, Henry Marsh of the United States has big smile as he wins 3,000 meter steeplechase in Soviet Spartakiade.