This article addresses the patterns of gender and temporary international research visits among researchers, using data from a population of 10,349 Spanish doctorate holders in nine research fields. It analyzes rates of international mobility, and the frequency, duration, and destinations of temporary visits, by gender, with implications for scientific careers. We find that in their overall rates of mobility across fields, women are more internationally mobile than men. But compared to men: first, women’s frequency of international visits is lower; second, their visits occur at earlier ages and stages in their careers; third, their visits are shorter; and finally, their destinations are closer to home. Given the paucity of empirical research on gender and international research mobility, the patterns reported here are sound data points for continuing comparative, cross-national investigations, and point to consequential considerations for gender equity and science and public policy.