Welcome to the 2024 100 Miles in 100 Days Challenge! The program begins at 6 a.m. on November 1, 2023, and closes at 4 p.m. on February 8, 2024.
Each year, the 100 Miles in 100 Days Challenge grows as we challenge park visitors to get outside and connect with nature. With more than 515 miles of trails, Maricopa County regional park system provides the perfect venue for hiking, trail running, mountain biking, and horseback riding.
Visit this link to learn more!