2025 Humboldt Redwoods Marathon, Half Marathon, 5k

Experience the beauty and challenge of the 2025 Humboldt Redwoods Marathon, Half Marathon, and 5K on October 12, 2025, in Sacramento. Run through the majestic old-growth redwood trees of Humboldt Redwoods State Park on courses certified by USATF. The marathon is a Boston qualifier, while the half marathon showcases the iconic Avenue of the Giants route. The 5K offers a more relaxed pace amidst stunning natural scenery. Don't miss this unforgettable event filled with camaraderie and the breathtaking landscapes of California.