Nauvoo Marathon

This race suits runners who want a honest, no-frills marathon experience without the distraction of significant elevation changes. If you're training for a faster time or building fitness before tackling a hillier course, the flat to gently rolling terrain gives you the conditions to run your own race. It's also welcoming to those making their first marathon attempt, since you won't spend energy fighting mountains. The flatness means there's nowhere to hide, so you'll need genuine aerobic fitness rather than relying on downhill sections to carry you through. What you'll encounter is a straightforward road course through Nauvoo, a historic area in Illinois with quiet stretches and small-town character. The lack of elevation gain is the defining feature here, which sounds like a gift until mile 18 or so when the mental game kicks in and you're still running on the same plane you started on. Wind exposure could be a factor depending on conditions, since flat courses offer little shelter. There's also the reality that a completely flat marathon feels longer psychologically than a hilly one, even though your legs might thank you come the finish line. The course is road-based, so expect pavement the whole way and plan your nutrition strategy accordingly, as aid stations need to do their job on terrain without natural recovery valleys.