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I'm Bound for Boston Marathon & Half Marathon - Denver

📅 August 1, 2027 (estimated date)📍 Denver · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (August 2, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

26.2 mi13.1 mi

About

The I'm Bound for Boston Marathon & Half Marathon - Denver offers a marathon (26.2 miles / 42.2 km) and a half marathon (13.1 miles / 21.1 km) in Denver on August 1, 2027, starting at 6:30 a.m. It is designed for runners aiming to qualify for the Boston Marathon or to set a personal best.

The race is run on a USATF-certified 1-mile (1.6 km) loop near Northfield High School, with the field limited to 75 participants to create a motivating environment for serious runners. There are plenty of aid stations with water and electrolyte drinks, and participants are encouraged to bring their own supplies. Everyone receives a race T-shirt and a finisher medal, with awards in five-year age groups.

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