A running group in Heiloo, She Runs Heiloo, has attracted almost 60 women, according to its founder Jorinda van den Broek. The group was created for women who feel unable to run alone after dark, and now also includes a participant from Alkmaar. About five women attend each outing on average.

Van den Broek said most participants work during the day and therefore exercise in the evening, when it is dark. Participant Judith said she had previously avoided entering the park at night but now feels able to exercise there with the group. Both described the group as useful, while noting that it was sad that such an initiative was necessary.