Be a VOLUNTEER! There are other ways to join the United Airlines Guam Marathon event. If running in the event isn’t one of your goals, join us as a volunteer at the UAGM expo, start line, along the race course or at the Finisher's Beach Party. One of the keys to the success of the United Airlines Guam Marathon is the contribution of volunteers who support all our runners and represent the best that Guam has to offer! The United Airlines Guam Marathon - not just a race, a Håfa Adai Experience!