Haunted Halloween Half Marathon & 5km 2026

The Haunted Halloween Half Marathon & 5km takes place in late October in Chicago's Lincoln Park. Both the half marathon and 5km begin and end near the Diversey Event Space. The event begins with costume judging prior to the start of the half marathon and 5k, allowing participants to race in attire ranging from a minor Halloween accent to a complete costume suitable for movement. The half marathon route proceeds south along the lakefront towards the Field Museum before looping back to Lincoln Park, featuring mile markers and four aid stations. The 5k follows the same initial 1.55 miles before turning back. Costumes are a component of the day, with awards for the leading individual and group participants. The event also accommodates practical race-day needs; gear check is available for one standard backpack, which is useful if a costume incorporates an unwieldy item.