Mentoring of graduate students and postdoctoral scholars is an integral part of training at research institutions. Mentoring scholarship has rapidly evolved over the last two decades, elucidating the need for shifts in mentor/mentee relationships, including the need for mentor training. The University of Maryland, Baltimore and the University of Maryland College Park combined mentoring workshops based on an established curriculum. Workshops were offered to faculty at different institutions in the Maryland system growing out of a need from the National Science Foundation Alliances for Graduate Education and the Professoriate (NSF AGEP) Promise Academy Alliance. The authors share the model they developed as well as the benefits and challenges of the inter-institutional approach.