Blood Rock 100

The Blood Rock 100 returns to Pelham, Alabama on December 4th for three days of endurance running through Oak Mountain State Park. This ultra-distance event offers a grueling course that spans over 101 miles with aid stations every 5-7 miles providing essential support throughout the race. Runners will navigate single-track trails and gravel roads closed to cars, exploring remote areas of the park rarely seen by visitors.
The setting on December mornings in Pelham is serene yet challenging for runners. Early morning temperatures hover around freezing as participants begin their journey along trail conditions that are firm but slightly soft underfoot. The race route takes runners through varied terrain with significant elevation changes and rugged climbs, making it a test of both physical endurance and mental fortitude.
Blood Rock has been an annual event since its inception in 2016, drawing hundreds of participants each year who come to experience the unique challenges and breathtaking views that Oak Mountain State Park offers. The race supports various local causes through sponsorships and fundraising efforts, contributing significantly to community initiatives within Pelham and surrounding areas.
The course at Blood Rock is designed with both scenic beauty and technical difficulty in mind. Runners will traverse single-track trails for 92 miles of the total distance, experiencing off-the-map climbs such as the famous Crack-in-the-Wall ascent that leads up to Summit Lake. The remaining sections consist of gravel roads closed to vehicular traffic, providing a quiet environment away from city noise and distractions.
Weather conditions during December in Pelham typically offer cool temperatures with an average high around 50 degrees Fahrenheit, ideal for running but still requiring proper attire and hydration strategies. UV index levels are low at about two points on the scale, making sun protection less of a concern than staying warm and dry as morning dew can make trail surfaces slick.
The Blood Rock series includes multiple distance options catering to various skill sets within ultra-running enthusiasts: 25K, 50-mile, 55K, and the flagship event—the full 100-miler. Each race starts at The Cabins located in Oak Mountain State Park with cutoff times ranging from 18 hours for shorter distances up to a generous but demanding 44-hour window for those tackling all 101 miles.
To register or find more information, visit the official registration page: [https://ultrasignup.com/register.aspx?did=133487](https://ultrasignup.com/register.aspx?did=133487). Early bird pricing is available until October 20th with fees ranging from $105 for the 25K to $380 for the Blood Rock 100.
Race packets can be picked up on December 2nd and 3rd at The Cabins in Oak Mountain State Park. Participants should bring a valid photo ID along with their confirmation email or printout of registration details. All runners must adhere to age requirements set by race organizers; participants under the age of 18 require parental consent.
The Blood Rock 100 takes place across December 4th through 6th at Oak Mountain State Park in Pelham, Alabama. This event is a testament to the endurance culture and natural beauty that defines the region’s appeal for serious runners seeking both challenge and adventure.