During the COVID-19 pandemic, many undergraduate internships, including the National Science Foundation (NSF) Research Experiences for Undergraduates (REU) programs, were canceled or moved online. Although several studies have examined student success during the online transition, less research has examined how REU programs have changed from this experience, the ongoing and novel challenges, and strategies that program coordinators employed to overcome them. To investigate this gap, REU site programs were surveyed in the NSF Geosciences (GEO) Directorate, with findings that many students declined participation after having been accepted into programs, and that there were difficulties accessing institutional support services and meeting changing student needs. Despite these challenges, nearly all respondents reported program satisfaction, with several indicating the importance of GEO REU community support. Overall, REU coordinator resilience appears to be a major factor in program success.