Curriculum mapping is the process of creating a visual representation of the teaching and assessment of learning outcomes in a degree, program or major. Best practice recommendations about curriculum mapping typically focus on mapping individual programs. Therefore, many recommendations, such as meeting individually with faculty as they map their course, may not be feasible for large-scale mapping projects. This paper describes the process of a large-scale curriculum mapping project designed to map the Bachelor of Science degree and 24 of its associated majors. The project involved the participation of faculty from three colleges within a research-intensive University to map over 400 courses. We describe the key questions and decisions involved in carrying out the mapping project, our data collection and analysis process, and our dissemination efforts to ensure that the mapping results were used to inform curricular change.