Have you registered for the Bank of America Shamrock Shuffle? If not, you’re in luck.

Those who sign up by Friday using the code NBC will get $10 off their entry. That makes the cost of registration $40 for runners.

The offer expires March 1 or while supplies last.

The popular Chicago 8K known as the unofficial kickoff to running season steps off March 24 in Grant Park.

Click here to register.