Advice paper. The LERU Roadmap towards Open Access represents a conscious decision by the League of European Research Universities to investigate new models for scholarly communication and the dissemination of research outputs emanating from LERU universities. The European Commission has singled out "the dissemination, transfer and use of research results, including through open access to publications and data from publicly funded research", as one of the action points to be pursued in order to achieve a well-functioning European Research Area (ERA). Access to research information must be optimised if the European research community is to operate effectively, producing high-quality research that has a wider social and economic impact. This Roadmap traverses some of this landscape and aims to assist LERU members who wish to put in place structures, policies and practices to facilitate Open Access.