Discovered by the Swedes in 2006, they called it_SwimRun, because you swim and run, swim and run, swim and run. Utilizing Lake Padden and the beautiful forested trails that surround the lake, Bellingham SwimRun participants are treated to an inspiring and challenging course. You have your choice of the 15 km sprint length event (yes in the world of SwimRun, 15 km is seen as a sprint), or the user_friendly 5 km super sprint._