Jack Zanks' Surfrider, a Cruising Class B boat, had the best corrected time today in a fleet of 37 Cruising Class starters in the 36th Annual Annapolis-to-Hampton sailboat race to win the Virginia Cruising Cup.

For the third straight year, Al Van Metre's Running Tide, a 61-foot sloop competing in Cruising Class A. earned the Robert M. Ravin Trophy, awarded to the best 34 feet or longer with the best corrected time.

The Hampton Yacht Club Trophy, which goes to the fastest boat under 34 feet, was taken by John Potter's San Juan 30, competing in MORC 1.

Some 100 starters left the mouth of Annapolis Channel Thursday on a course that took the nine-class fleet 120 nautical miles south on Chesapeake Bay.

The 12 knot northeasterly winds at the start died out late Thursday afternoon and light breezes prevailed for the remainder of the race.

Running Tide was first in elapsed time and finished at 5:30 a.m. this morning.

Race committee chairman Thomas T. Thompson of the sponsoring Hampton Yacht Club, said the lack of wind made it one of the longer-lasting races. "It took the last boat about 44 hours." Thompson said. "Some skippers got discouraged by the heavy heat and the light air and gave up. We had 15 nonfinishers."