This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Børrestad, L. A. B., Andersen, L. B., Bere, E. (2011 The participants were categorized according to main mode of commuting to school in the three different school seasons (fall, winter and spring) and for the full school year if more than 50% of all trips were conducted by one specific mode.Results: Most pupils (75%) were categorized as active commuters for the full school year.However, large seasonal variances were observed, especially for cycling. A total of 52%, 3%and 51% were categorized as cyclists in fall, winter and spring, respectively. Girls were more likely to be walkers (32% vs.24%) and less likely to be cyclist (32% vs. 41%) than boys.Children of parents with higher education were more likely to be cyclist in fall (57% vs. 42%) and spring (56% vs.40%), however, they were more likely to be walkers during winter time (71% vs.56%).Conclusions: Most children reported that they were active commuters. Large seasonal variation was observed, especially regarding cycling.