Background and purpose: Preschool/childcare settings offer a practical target for physical activity interventions. Online learning programs have the potential for greater public health reach and impact. The SHAPES-Dissemination (SHAPES-D) project adapted the original SHAPES in-person intervention for online delivery to teachers. The purpose of this paper is to describe the implementation monitoring and process evaluation for the SHAPES-D project. Methods: Nine preschools with 26 classrooms participated. A total of 41 teachers were trained via online learning to implement the SHAPES-D program in their classrooms. The dose received, completeness, and fidelity of implementation were assessed through website metrics, teacher surveys and interviews, and classroom observations. Results: Dose received was adequate (73%). Observed completeness and physical activity enjoyment fidelity were high (100%), although moderate-to-vigorous physical activity fidelity and social environment fidelity were low (25% each). Overall implementation was high (91%). Discussion: Results indicate that the online method of delivery is viable for dissemination. The online delivery system provides an easy method of monitoring dose received. This may be the first structural intervention to monitor dose received through web metrics. Conclusion: The adaptation of an in-person intervention to an online delivery system increases the potential for dissemination of a successful program to increase physical activity in preschool settings. (author abstract)