The route will leave Grand Junction, CO and ride to and through the Park. After exiting the park, the ride will tour the countryside for an additional 20+ miles before returning to the starting point in downtown Grand Junction. The entire route is paved. There are no entrance fees, being a holder of the "senior pass".
The ride is organized by Roll Massif so it is open to the public, subject to the event maximum. The organization is the one to contact, so I have answered "no" to the question of open to the public. The number in the group stated below is a guesstimate. Roll Massif will have the exact number when registration closes.