The Rock 'n' Roll Seattle Marathon is an annual marathon held in Seattle, Washington, since 2009. The race weekend also includes a half marathon and a 5K. It is part of the Rock 'n' Roll Marathon Series organized by Advance Publications' Ironman Group. The 2020 edition of the race was cancelled due to the coronavirus pandemic. Organizers initially announced that the race would return on the weekend of June 13, 2021, as a "half marathon event" before postponing it to the weekend of August 22 and then cancelling it altogether, with entries automatically transferred to 2022.