The University of Colorado at Boulder Office of Community Affairs will host the opening ceremony for the Colorado "Avon Breast Cancer 3-Day" walk on Friday, Aug. 2, from 8 a.m. to 8:30 a.m. at Williams Village. The "Avon Breast Cancer 3-Day" is a national fundraiser taking place in 13 cities during summer 2002. The opening ceremony, which is not open to the public, will feature an inspirational message for the expected 2,500 walkers before they begin their three-day journey to Denver. They will complete their walk Sunday, Aug. 4, in Denver's Invesco Field at Mile High.