This is a letterbox, please don't take the stamp
The posted coordinates bring you to the trail head of the par course. You will need to spot a couple of par course sign to decode. The number of the par course station is the clue to fill in below.
The letterbox is at:
N39 15.AAB W84 29.XYZ
You will need to locate some par course signs to decode the final:
A = Leg Stretch
B= Vault Bar
X = Body Circle
Y = Steps
Z= Parallel Squats
Sum check = A+B+X+Y+Z = 27
The final is hidden behind a laurel oak tree.
Stay on the trails until close to the cache and please follow all other GPHC park rules while geocaching.