It was a day for speed at the Washington International Horse Show. Afternoon and evening competition featured timed events where jumping faults were converted into seconds and added to the original scores.

Katie Monahan of Upperville, Va., raced to victory with a perfect 34.57 round aboard Everon, an 8-year-old Danish Warmblood owned by the U.S. equestrian team, winning the Martin Perpetual Trophy in the $5,000 Sun-Maid International Open Jumpers competition.

"He's a turnin' boy," said Monahan, describing Everon's effort. "It was just one of those rounds where everything clicked going forward."

Monahan's horses were barred from all but the $35,000 Anheuser-Busch President's Cup Grand Prix because her entries were a day late. She is permitted to ride horses owned by the U.S. equestrian team.

A faultless 35.91 round gave second place to U.S. Olympic team rider Leslie Burr on Nightwork, an 8-year-old Canadian thoroughbred mare owned by the U.S. equestrian team. George Morris of Pittstown, N.J., who trained both Monahan and Burr, took third place on Brussels, an 8-year-old Belgium-bred mare in a clean 36.14 round.

In an afternoon event, Michael Matz of Collegeville, Pa., clocked a perfect 39.884-second round aboard a gray gelding named The Dubliner to capture first place in the Intermediate Jumpers class.

The Irish-bred 9-year-old owned by Laura Blakemore of Birmingham, ran 29th out of 32 entries, and was the only horse to top Szafir, the early leader. Szafir, a 9-year-old chestnut gelding ridden by Donald Cheska of Waukesha, Wis., and owned by Mr. and Mrs. William Van Dyke of Milwaukee, took second in a clean 40.028 seconds. Third went to Stay Tuned, a 7-year-old gelding ridden by Burr.

Last night's competition tied Burr with Robert Smith of Great Britain for leading international rider, each with 10 points. Katherine Burdsall maintained her lead among national riders with 14 points. Norman Dello Joio is second with nine. Matz and George Morris are tied for third place with five each.

The United States continues to lead international team standings with 35 points. Great Britain follows with 29 and Canada with 13.

In Hunter's Class competition, U.S. Olympic three-day team rider Bruce Davidson rode J.J. Babu to the Robert Burneston Memorial Challenge trophy in the Gentleman's Hunter Hack Class. Mr. and Mrs. Davidson own the 10-year-old thoroughbred gelding.