Hi Kimberly, reservations aren’t reiuqred, but space is limited. To ensure a spot, contact your local Sport Chalet store and speak with the Bike Department. They’ll be able to reserve a spot for you. Also, there’s no need to bring your own bike. Thank you for your interest in this event! Also, these Bike Workshop sessions will occur the 3rd Saturday of every month at all Sport Chalet locations (except Metrocenter).