In response to COVID-19, continued workforce training is essential to ensure that evidence-based treatments are available on the frontline to meet communities' ongoing and emerging mental health needs. However, training during a pandemic imposes many new challenges. This paper describes a multisite training and implementation pilot program, facets of which allowed for continued training despite the onset of the COVID-19 pandemic and subsequent social distancing guidelines. This virtual facilitated learning collaborative in Written Exposure Therapy, an evidence-based treatment for posttraumatic stress disorder, included virtual workshop training, phone-based clinical consultation, implementation-focused video calls for program leadership, and program evaluation. Data are presented about program enrollees and patient impact following the onset of COVID-19-related social distancing restrictions. Challenges, successes, and practical guidance are discussed to inform the field regarding training strategies likely to be durable in an uncertain, dynamic healthcare landscape.