Blood Rock 100
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The Blood Rock 100
Length: 101.79 Miles
When: The Blood Rock 100 IS December 5th - 7th, 2025
Where: Oak Mountain State Park, at the Cabins on Tranquility Lake *
Start: Friday, December 5th, 10:00 AM, Cutoff: 44 Hours
Elevation Gain: 17,196 FT, Elevation Loss - 17,196
Single Track Trails: 92.84 Miles
Gravel Roads: 7.74 Miles (cars not allowed)
Paved Roads: 1.18 Miles
*Oak Mountain State Park is located 20 miles south of Downtown Birmingham, in Pelham, Alabama.
We have two Shirt Cutoffs!
Don’t Miss this 1st cutoff!
First Shirt Cutoff - Sunday, October 20th
Those shirts are AWESOME. They are the same shirts we gave at the Southern States 200, Hotter ‘N Hell and Ridge to Blazing Ridge. These are custom made and must be ordered 6 weeks ahead. We do not order extras.
Standard Race Shirt Cutoff - SUNDAY, November 16th
IF YOU WOULD LIKE A BLOOD ROCK RACE SHIRT YOU "MUST" REGISTER BY SUNDAY, NOVEMBER 16TH.
Please register early to insure getting one of these really cool shirts.
THERE WILL BE NO LATE REGISTRATION
REGISTRATION CLOSED MONDAY, DECEMBER 1ST. NO REGISTRATIONS WILL BE ACCEPTED AFTER DEC 1ST. THERE WILL BE NO REGISTRATION AT THE START, FRIDAY OR SATURDAY.
Lodging and Camping at Blood Rock
We have reserved all 10 cabins at the race start/finish. Runners may choose to reserve one of 9 cabins located around Tranquility Lake adjacent to the Meeting Center.
There are several hotels right outside the south gate of the Oak Mountain State Park. That is the gate near Interstate 20. Here is a Google Map Link to hotels.
The Blood Rock 50.88 Mile Loop GPX File
Almost every year people mess with flags and signs before and during the Blood Rock Races. Should the course marking be altered this year and you have the GAIA App and the BR GPX file download to your phone, you can stay on course. I suggest downloading the app in advance and practice with it. It can be a bit confusing at first. After a few runs you will be a GAIA Pro. Better yet, if you live in the area, run part of the BR course using the app. The GAIA app does not need cell service.
Download the GPX File and load it on your Gaia App or navigation device. Learn how to use the app and You will not get lost at Blood Rock.
This is the cutoff for the custom made, fully sublimated, gender specific, technical wicking shirts.
Sorry, I only have photos of the Southern States shirt.
After opening the CalTopo map, use the check-blocks in the “LINES AND POLYGONS” Section (on the left side of the map) to switch between individual sections and full course.
Mandatory gear for 100 mile runners
The Blood Rock course can be brutal in December and potentially dangerous under adverse conditions. That danger can be mitigated by proper preparation. We are requiring all 100 mile runners to carry certain items we feel are necessary for the safety of each runner. The required gear list will help ensure all 100 milers will be able to handle anything they may encounter during the race.
The list is divided into two sections. First is the list of things all 100 runners will be required to have with them at all times while on the course. The second list is things runners must have with them at the race. That is, we MAY ADD these items to the mandatory list should we feel it is necessary for our safety. Yes, we will check to see that you have all this stuff at the start. We may also check to see that you have the required gear before you leave some aid stations.
In Alabama, the Daytime temperatures may be in the 50s, overnight the lows can drop into the 30s or lower. Averages for early December are 58 to 38. It can even snow. Check out the pictures for the 2017 Blood Rock 100. We received 8 inches of snow the night before the race. Saturday night the temperatures dropped into the teens.
Required Gear for 100 Milers - Required regardless of weather
GPS Device with the latest course file downloaded on it. You must also show that know how to use the device.
Battery pack or other means to keep you GPS device charged for the duration of the race. *
Jacket
Hat or buff
Gloves
Long Sleeve Top
200 Extra Calories (This is a backup not to be consumed in the normal progress of the run.)
Working Cell Phone. This may double as your navigation device. Your phone must be kept charged at all times.
An emergency poncho or rain jacket.
*We “Suggest” you also have an extra backup battery pack in dropbags.
Emergency Bivy Sack
Long pants or tights
Warm jacket (To replace the “Light Jacket” if the weather is cold.)
Warm base layer
Rain jacket with hood
Water Filter Bottle or system
These Items may be added to the required gear list at the race
Pace Chart for the Blood Rock 100
and Mandatory Cutoffs
*
*
If you leave Peavine Aid Station at mile 93.967 before the 2:10 AM Cutoff and eventually make it to the finish, you are an official finisher. There is no cutoff at the Cabins Finish.
Blood Rock 100 Mile - Aid Station Detail
Detailed Information on All Crew Accessible Aid Stations
This link will provide Aid Station Charts for all distances and information on which aid stations are crew accessible and which allow drop-bags. It also has detailed driving directions to each aid station, Google Maps link to each aid station, and GPS Coordinates for each.
The Summit Lake and the Train Station aid stations can only be reached by leaving the park. Overnight crew members can only go to either aid station through the front gate (south gate near I-65) over night. The north gate closes at 5:00 PM and does not reopen until 7:00 AM. (You must also return to the park through the south gate.) To get into the park overnight, you must have reserved lodging in the park or have the Blood Rock Crew Car Pass. Without one or both, you cannot get back into the park at night.
Lodging Near the Blood Rock 100
Near Oak Mountain State Park
There are 9 hotels less than two miles outside the South Gate of Oak Mountain State Park. If you plan to reserve a hotel room, it should be on the south end of the park. The North gate is locked at sunset. We provide you and your crew with a car pass that will allow your crew to leave and return to the park overnight during the Blood Rock races.
Camping inside Oak Mountain State Park:
The Oak Mtn State Park Campground was totally renovated in 2024.
Here is what the park says: Nestled in a large cul-de-sac which borders Beaver Lake and surrounded by rolling hills topped with the long lived and majestic Longleaf Pines, our campground is a favorite spot for families to get away from the hustle and bustle of the modern world. The campground is open for camping year-round.
WARNING FOR ALL DISTANCES:
ABOUT 300 YDS PAST KINGS CHAIR THERE IS A SPLIT.
25K RUNNERS GO RIGHT.
ALL OTHER DISTANCES GO LEFT.
WHEN YOU SEE SIGNS ON THE COURSE, READ THEM!
We don’t carry signs miles up the mountain for fun! They are to keep you on course.