Sam's can do almost anything it wants to without anybody's permission. It can use the certified course for its race. It can claim it uses a USATF certified course. It can put the certification map on its website.
The one thing Sam's cannot do is display the USATF logo on a certification map that it has modified. If it wants a USATF certificate with its race name at the top, and it has the original race's permission, it can be obtained for a nominal fee.