The Blue 2 Blue Challenge
West Rock, United States • 4 May 2025
The Blue 2 Blue Challenge is a demanding 50K trail race set in New Haven, Connecticut, known for its challenging terrain and technical trails. Participants will navigate some of the toughest trails in the state, including the Regicides and Quinnipiac Trails, with a total elevation gain of approximately 6,350 feet. The race features an out-and-back course with multiple aid stations, and runners must have completed a trail 50K within the past year to qualify. With a strict 10-hour cutoff and no pacers or crews allowed, this event is designed for experienced runners seeking a true challenge. Visit the organization's website for the most recent information.