Copenhagen is today praised as a truly bicycle-friendly city. The Danish capital earned its reputation as a ‘bicycle city’ early on. The network of bicycle infrastructure developed in the first half of the twentieth century was a result not least of a thriving cycling culture and the efforts made by cyclists’ organizations. In the following car-centric decades this network made cycling a more resilient practice than elsewhere, before cyclists and their lobby organizations managed, again, to pressure policy makers to renew supportive measures for cyclists. The article thus highlights two concepts: road users as potential co-producers of the mobility system as well as the obduracy of infrastructure and its capacity to preserve habits and cultures of the past.