Blood Rock 100

Blood Rock 100

Blood Rock 100 is a multi-day trail running event at Oak Mountain State Park in Pelham, Alabama, held December 4-6, 2026. The event includes multiple race distances and uses the Cabins on Tranquility Lake as the start and finish location.

Distances:

• Blood Rock 100 : 101.79 miles
• Blood Rock 50 Mile : 51.19 miles
• Blood Rock 50K : 31.18 miles
• Blood Rock 25K : 16.62 miles

The Blood Rock 100 course comprises mostly single-track trail with some gravel and paved road sections. Course composition for the 100 includes 92.84 miles of single track, 7.74 miles of gravel roads (cars not allowed), and 1.18 miles of paved roads, with 17,196 feet of elevation gain and loss. The 50 mile course includes 46.42 miles of single track, 3.87 miles of gravel, 0.59 miles of paved road, and 8,659 feet of elevation gain and loss. The 50K and 25K list elevation gains of 5,345 and 2,885 feet respectively.

Course format notes: the 100 is two full laps of the new Blood Rock Course; the 50 is one full lap. The 50K is one full lap of the North Loop including the Belcher Tract. The 25K passes Summit Lake and Demopolis Lake and splits from the longer courses just past King’s Chair.

Support and logistics include aid stations approximately every 5-7 miles, hot soup, hot food overnight, cold drinks with a bring-your-own-cup policy, and breakfast in the early hours. Registration deadlines and shirt ordering are stated: shirt cutoffs on October 20 and November 16, final shirt order placed November 17, and registration closes November 30 at 11:59 PM CT. Refunds and rollovers are available through Ultrasignup up to 30 days before registration closes; after that entrants may roll their entry to the next year or receive credit for future Southeastern Trail Runs events. In the event of cancellation for reasons beyond organizer control, full refunds apply up to 30 days prior, otherwise entries roll to the next year. Visit the organization's website for the most recent information.

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