October 14 With a combination of breathtaking scenery to include lake views, horse pastures, beautiful forests and golf courses, the Hayden Lake Marathon is truly one of a kind. Saturday, October 14, marks its 12th year, with all three distances starting and finishing at Hayden Lake’s Honeysuckle Beach. Attendees can choose from the full marathon, half marathon, quarter marathon, 5k or virtual run. Those who wish to participate will need to register before October 13 online at HaydenLakeMarathon.org.