The Snohomish River Run Marathon & Half Marathon in Snohomish, WA, is a running event that showcases the beauty of the Snohomish River. There is a 5k, 10k, half marathon, and full marathon. The courses are fast and flat, giving racers views of the river valley and the distant Cascade Mountains. All participants will get a race shirt and a finisher medal. Full marathon participants will also get a Finisher Jacket.