The closest town is Edgefield. From Myrtle Beach it's about 250 miles:
I-20 West until exit 18 (Rt 19)
Take 19 north (right) for about 10 miles
At intersection with Rt 25, continue straight through stoplight, it turns into 25 at that point (Rt 19 turned right)
Take 25 all the way into downtown Edgefield
At courthouse in downtown, 25 will turn right at light, follow 25
Take 25 about 3 miles out of town
Turn left on 283
Go about 5 miles
Bear right onto Walker Road
Go 1.5 miles
Turn right on Morgan Bussey Road
Go 1 mile, track on right
They are open 7 days a week, sign up sheet with drop box for money at scoring tower.
But much closer would be TNT near Chester this weekend. :) There is another thread here about it. Can you make it?