Blood Rock 100
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About the race
Blood Rock 100 is a trail running weekend organized by Southeastern Trail Runs at Oak Mountain State Park in Pelham, AL. The event spans December 4-6, 2026 and uses the Cabins on Tranquility Lake as the meeting center for starts and finish. The courses run through ridge-top and valley terrain inside Alabama’s largest state park. Features described for the course include ridge-top views, valley floors, gentle roadway sections closed to cars, steep climbs not shown on maps, backcountry sections of the park, secluded pools and waterfalls, and several mountain lakes including Summit Lake, Demopolis Lake and Belcher Lake.
Summit Lake sits on the mountain crest and is served by an aid station. Aid stations are provided approximately every 5-7 miles and offer hot soup, hot food through the night, cold drinks, and breakfast in the early hours. The event notes closed-road gravel sections where cars are not allowed. Distances and basic metrics: - Blood Rock 100: 101.79 miles, 17,196 ft elevation gain - Blood Rock 50: 51.19 miles, 8,659 ft elevation gain - Blood Rock 50K: 31.18 miles, 5,345 ft elevation gain - Blood Rock 25K: 16.62 miles, 2,885 ft elevation gain Registration and apparel notes from the organizer: registration closes November 30 at 11:59 PM CT, shirt order deadlines are October 20 and November 16, there will be no late registration, and refunds or rollovers follow the stated Ultrasignup policy with options up to 30 days before registration close. Visit the organization's website for the most recent information.
