Pain is one of the most common symptoms of extreme stress in youth. Without treatment, short-term pain can last for months to years (called 'chronic pain'; CP), a problem already affecting 1 in 5 Canadian youth. The COVID-19 pandemic is one of the greatest threats to youth mental health seen in generations. CP in childhood can trigger a wave of mental health issues that last well into adulthood. In 2019, we learned that access to pain care is poor and a priority for youth with CP and their families. Unfortunately, COVID-19 has only made access more difficult. In 2020, we created an online stepped care program called the Power over Pain Portal for youth with CP. Stepped care is a promising way to improve access to CP care by tailoring care based on the symptoms each youth is experiencing. Like a ladder, youth start with one type of care and then step up or step down to more or less intense care depending on what they need. Over the past year, funded by CIHR, we worked with hundreds of youth and healthcare professionals across Canada to understand how the pandemic has affected pain and mental health. We also summarized all online pain self-management programs including peer support for youth to find the best resources to include in the Portal and will translate the portal content into French. Together with a diverse group of youth with CP, we have now co-designed the online Portal. The next step (focus of this grant) is to test the Portal with youth to ensure it can be implemented and is helpful. We will recruit 93 youth with CP waiting for specialist care at 11 CP clinics across Canada to use the Portal for 4 months. We will see how they use the Portal and if it helps to improve their pain and mental health. This study is important because it will allow us to understand how the Portal works in the real world before wide public release (English and French) to support all youth in Canada with CP with accessible, evidence-based pain care.