Research on the Covid-19 pandemic highlights it as a catalyst for significant changes in mobility patterns. The health crisis sparked a renewed focus on cycling as a viable mode of daily transportation and prompted new public policies, including support for bicycle repairs and the establishment of temporary cycling infrastructure known as "coronapistes". This article investigates the development of the pro-bike association network in the Île-de-France region, examining its evolution from 1970 to 2023 and analyzing its spatial dynamics. It poses the question: To what extent did the Covid-19 crisis act as a catalyst for ongoing processes, or did it serve as a driver for more transformative change? Drawing on both quantitative data (a census of associations) and qualitative insights (narratives of organizational histories, interviews with association members, local authorities, and institutions), the research compares two sets of data: one collected prior to 2020 and another gathered afterward. The findings indicate that the advocacy efforts of these associations have played a crucial role in establishing cycling as a legitimate mode of transport in the Paris region. Although the foundations of these pro-bike discussions were laid well before the Covid-19 crisis, the pandemic has significantly enhanced the legitimacy, structure, and effectiveness of the associated movements. The degree of this impact varies based on the level of action involved.