Loureiro, Nuno Eduardo Marques deMarques, AdilsonLoureiro, VâniaMatos, Margarida Gaspar de2021-05-202021-05-202021-04-23Int J Environ Res Public Health. 2021 Apr 23;18(9):45031661-7827http://hdl.handle.net/10451/48049© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).The way adolescents travel to school can be an important contribution to achieving their daily physical activity recommendations. The main objective of this research is to know which variables are associated with the mode of transportation used to and from school by Portuguese adolescents. The 2018 Health Behaviour in School-aged Children questionnaire was applied to 5695 adolescents with an average age of 15.5 (SD ± 1.8), 53.9% of whom were female. The associations were studied by applying χ2 tests and multivariate logistic regression models. In this study, 36.5% of the participants reported walking or cycling to school. Active transportation to school is associated with age (OR = 1.3; p < 0.05), sufficient physical activity (OR = 1.2; p < 0.05), adequate number of hours of sleep (OR = 1.2; p < 0.05), perception of happiness (OR = 1.2; p < 0.05) and living near the school (OR = 2.4; p < 0.05). The results revealed that adolescents' choice to travel to/from school using an active mode of transportation increased with age, physical activity, hours of sleep, perception of happiness, and living near the school.engAdolescentWalkingHealth behaviorsHealth promotionPhysical activityjournal article10.3390/ijerph180945031660-4601