Unintentional injuries are a leading cause of child death. The present study evaluated the effectiveness of a behavioral injury prevention program for children aged 3–18 years and their caregivers. To accommodate families during the Coronavirus-19 pandemic, training was modified to be delivered virtually. Forty-one children aged 3–18 years and 14 parents/caregivers of children aged 3–5 years attended one of several 4-hour online injury prevention training sessions directed toward residents of Washington state. Training was targeted to three different developmental stages (ages 3–5, 6–12 and 13–18 years). Study outcomes included knowledge about injury prevention strategies, perceived vulnerability for injury, self-efficacy to engage in safety behaviors and behavioral intentions to be safe. Following training, participants showed improved self-efficacy to stay safe, excellent knowledge about the learned material and increased behavioral intention to engage safely. There was minimal change in perceived vulnerability to injury among children; caregivers of young children felt their children were somewhat less vulnerable to injury following the training. Almost all participants said they would recommend the program to others. Results suggest that a virtual behavioral training program delivered remotely is feasible and may be effective to create behavior change and reduce child injury risk. Given its scalability and reach, such programs are recommended for further study, refinement and, if demonstrated effective in larger-scale controlled trials, dissemination to address the leading cause of child mortality in the United States, unintentional injury.