['Active travel to school provides youth with an opportunity to accumulate minutes of physical activity toward meeting recommended levels.', 'The study included a nationally representative sample of U.S. children, aged 9 to 15 years, and one of their parents from 2004 (2256 pairs aged 11 to 15 and 5177 pairs aged 9 to 13). The objective was to estimate the prevalence of living within a mile of school, and of those who lived within a mile, the prevalence of active travel to school. Geographic, demographic, attitudinal, and behavioral correlates of active travel (defined as walking or bicycling to school one or more times during a usual week) were identified.', 'Nearly 35% of children live within a mile of school. Among those, 47.9% were classified as active travelers. Adjusted correlates were identified from each domain (three demographic, two geographic, two attitudinal, five behavioral), explaining approximately 10% of the variance in logistic regression models.'] Does national prevalence and correlate of walking and bicycling to school?