This week on Going Public , we spoke with Brandon Hahs, who is the co-director of the Muddy River Marathon , along with Bryan Kelpe. 2021 is the inaugural year for the Muddy River Marathon , which will take place Sat. May 1. At the time of the interview, over 700 individuals from over 15 states had registered for the event. It is a USATF-certified 26.2 mile course and also a Boston Marathon qualifier race.