Southern California's oldest 50k. The original 25/50k Bulldog Trail Runs. Take on the trails. Step up in distance. Crush your PR's. The Bulldog climb challenges runners of all abilities and rewards them with epic ocean views, unique sandstone cliffs, old growth oak groves, and fresh regrowth chaparal. Fully stocked aid stations and extra cooling stations are welcomed by all. Earn your brand new finisher medal, artist made overall awards, and 50k finisher shirts. The Bulldog Ultra 50k is part of the Trail Challenge along with the Tough Topanga 10k and Tough Mugu 25k.