Harbison 100

The Harbison 100 is a 2nd Year 100 Mile and 100K event in Harbison State Forest.

Harbison 100

The Harbison 100 is a multiple loop course through the only urban forest in the heart of the Midlands of South Carolina. Runners will enjoy scenic views of the Broad River while traversing rolling hills and rows of tall pine trees. Minutes from the city but while in the forest you feel like your miles away from everything. Distances offered are 100 mile and 100K.

Race Date

April 11-12, 2020
100 Mile Start 7:00 am
100K Start 7:30 am

Time Cut Offs

100 Mile will have a 30 hour time limit
100K will have an 18 hour time limit.


You will traverse all trails within Harbison State Forest except the Lost Creek Trail. This event is a multiple loop event, starting and finishing in the same area of the forest. There will be multiple fully-stocked aid stations and several unmanned water stations along the course. Each loop will net an approximate elevation gain of 1400′.

Click HERE for a map of the course.


You can select from several hotels within 5 minutes of the race location. There is no camping allowed inside the Harbison State Forest.


Pacers are allowed for all distances after dusk. Your pacers must be checked in and ready by 7 pm April 12th.

Your crew can come and go whenever the gates to the forest are opened. After 4 pm, the main gates will be opened for 15 minutes every hour on the hour. Crew must display crew pass to enter after 4 pm.

Volunteer pacers will be available on an as needed basis. The race will try to accommodate as many pacer needs as possible for those needing pacers. Pacer requests must be sent to the Race Director by March 1, 2019. Any request after this date, pacers may not be available.

Distance Changes

You are allowed to change distance until April 8th. You must complete this change in the system. Please note that if you change distances after the shirt orders are placed, you may not receive a shirt for the updated distance. If, after starting the race, you drop from the 100 Mile race to the 100K race and finish, you will be credited with an unofficial 100K finish with no finisher’s award and placing eligibility.


All drops, deferrals, and bib transfers must be completed by you through this registration site. If you fail to complete this process, your deferral may not be granted in the following year’s race. Bib transfers are free to do until March 31st.