The Open Race has 80 slots available and is sanctioned by USHPA as part of the U.S. Championship series. So you can expect to be flying with some of the top pilots in the U.S. The Open race also sanctioned by FAI with 20 of the 80 total slots reserved for foreign pilots until two weeks before the event. So you may not want to delay registering and confirming you spot with a payment.
The Sprint Race has 80 slots available. The tasks are a bit shorter in this race but this fun competition can be intense at times with lots of experienced pilots flying wings with similar performance. Its a great way to learn racing in a bit less demanding environment than the Open Race.
The SuperClinic has 20 slots available with world class instruction from Kari Castle and Ken Hudonjorgensen. Pilots in this clinic flying in this event can often get more airtime than those flying in the race events while improving their thermalling and XC skills.