Delmarva Ultra Challenge (DUC)

The Delmarva Ultra Challenge (DUC) is a unique 100K trail race designed for those seeking an intense challenge. Participants run two back-to-back 50K races: the first takes place at an undisclosed location on Friday night, followed by the traditional Algonquin race course on Saturday morning. The combined times from both races determine the top male and female finishers.

This event is not for everyone; it requires night running experience, mental toughness, and a high tolerance for pain. Only qualified runners who have completed a 50-mile race within the last year can register, with limited spots available. Visit the organization's website for the most recent information.