 Tobacco use is the single most preventable cause of death in the United States, with cigarette smoking accounting for nearly one-third of all cancer deaths each year. While a number of inexpensive and effective smoking cessation methods exist, including the nicotine patch and nicotine gum, smoking rates have not declined in the past few years. Individuals who engage in regular exercise, in addition to participating in a smoking cessation program, are often successful at quitting smoking and reducing post-cessation weight gain. However, past studies on this topic have consisted of highly structured, supervised physical activity, which made study recruitment and long-term adherence difficult. Additionally, these studies generally have had low long-term quit rates, which may be attributed to the lack of a nicotine replacement component. The purpose of this study is to evaluate the effectiveness of a community-based physical activity intervention, in combination with a behavioral smoking cessation program and nicotine replacement, at increasing smoking cessation rates among sedentary adult smokers. 