Mount Desert Island Marathon

The Mount Desert Island Marathon in Bar Harbor takes place in October 2026 on a road course that stays refreshingly flat to gently rolling throughout its entirety, making it a solid choice if you're chasing a time or prefer a race without major climbing. The elevation profile rarely strays far from sea level, topping out around 76 meters, so you won't waste energy fighting significant hills. This is a straightforward point-and-shoot marathon on established roads rather than a trail adventure, which means predictable footing and the ability to nail your pacing from the gun. October in Maine offers cooler temperatures that favour steady running, though you'll want to check the specific weather forecast as coastal conditions can shift. Head to the race website for course maps and logistical details that will help you decide if this race fits your schedule and goals.