Looking to crush a marathon PR or snag that Boston qualifying time? This gorgeous downhill route through Lassen National Forest gives you a massive advantage with nearly 1,000 feet of net elevation loss—and the Boston Athletic Association has confirmed there are zero time penalties for this course! Starting at Mason Station on October 11, 2026, you'll head out-and-back before transitioning onto the scenic Bizz Johnson Trail, where you'll climb modestly through the forest before enjoying an awesome 1,300-foot descent over the final 20 miles straight into Susanville.