Older adults from racially and ethnically diverse backgrounds and with preexisting mental illness have been disproportionately vulnerable to severe illness, disability, and death due to the adverse impacts of the COVID-19 pandemic. This study used a sample of older adults (60 +; N = 307) from a randomized clinical trial (Positive Minds-Strong Bodies [PMSB]) conducted between May 25, 2015, and March 5, 2019. Participants were recontacted to assess symptoms of anxiety, depression, general distress, and physical functioning during the COVID-19 pandemic between March 2, 2021, and July 18, 2022 (62.7% recontacting rate excluding ineligible participants; N = 165). We estimated an analysis of covariance model to evaluate whether or not prior differences between the PMSB intervention and enhanced usual care (EUC) groups continued to be observed at the COVID-19 follow-up. Results showed that, compared to EUC, participants who received the PMSB intervention reported fewer depression symptoms (Geriatric Depression Scale-15 scores) and greater physical functioning (Late-Life Functioning and Disability Instrument scores) at the COVID-19 follow-up. No significant differences were observed between the PMSB intervention and EUC groups on anxiety symptoms (Generalized Anxiety Disorder-7 scores) during the pandemic. Last, findings suggested that the lower depression symptoms and greater physical functioning observed after treatment completion were sustained, though not further improved, over time. These findings provide evidence that the PMSB intervention is a powerful intervention to promote resilience and prevent disability associated with major life stressors, such as the COVID-19 pandemic. Future research is needed to examine the underlying mechanisms of psychosocial and exercise training interventions that lead to lasting resilience. (PsycInfo Database Record (c) 2024 APA, all rights reserved).