The Great Neck Bicycle Challenge is coming to Great Neck Plaza this Sunday, July 15, from 9 a.m. to 2 p.m. The race is open to U.S.C.F. and professional riders only, with a one-day U.S.C.F. license available. The race will be held on a closed .6 mile course from Grace Avenue to Canterbury Road to Stoner Avenue to Park Place. For further information, phone race director Bill Bauer at 628-2590, 8 to 10 p.m., or call Bicycle Planet at other times at 364-4434. Spectators are invited --- no admission!