The GLA:D Back project evaluates the implementation of standardised patient education and exercise therapy for people with persistent or recurrent low back pain (LBP) in a hybrid implementation-effectiveness design. This involves evaluating the process of implementation as well as clinician level outcomes and patient level outcomes. GLA:D (Good Life with OsteoArthritis in Denmark) is a non-profit initiative and registered trademark from the University of Southern Denmark. It educates clinicians in delivering evidence-based care for musculoskeletal health conditions and registers outcomes in a clinical registry. GLA:D Back uses only the acronym. The main activity of the implementation strategy is a two-days course for physiotherapists and chiropractors in delivering patient education and exercise therapy that is aimed at supporting patient self-management of LBP. This comes with ready-to-use patient education materials and exercise programs. The course is targeted at chiropractors and physiotherapists, but any health care provider authorised to treat patients with back pain in Denmark can participate, i.e. medical doctors, physiotherapists and chiropractors. The clinical intervention is a group-based program consisting of two sessions of patient education and 8 weeks of supervised exercises. The program uses a cognitive-behavioural approach and the aim of the exercise component is to restore the patient's ability and confidence to move freely. Clinicians decide which patients are offered the program. The implementation process is evaluated in a dynamic process monitoring the penetration, adoption and fidelity of the clinical intervention. The education of clinicians is evaluated via clinician-level outcomes concerning attitudes towards back pain and confidence in managing people with LBP. The clinical intervention and potential effect mechanisms are evaluated at the patient-level in an observational design. Patients who are participating in the GLA:D Back program are followed using measures of knowledge, skills, beliefs, performance, self-efficacy and success in self-management. Effects at a national level will be investigated via data from national registries of health care utilisation and sick-leave. Patient- and clinician reported data are collected in a registry.