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. A key task of the mental health field is the dissemination and implementation of effective interventions. Numerous factors contribute to the gap between research and practice, including the broad sociopolitical context; organizational factors, such as leadership support and availability of resources; provider motivation, attitudes, and skills; and characteristics of the interventions themselves (Chen et al., 2017; Stirman et al., 2016). Research suggests that training alone is insufficient to fully implement and sustain effective interventions over the longer term (Godley et al., 2011; Herschell et al., 2010) and that factors at the system, organizational, and individual levels need to be addressed simultaneously to facilitate successful implementation (Beidas et al., 2010; Stirman et al., 2010).