Home / Private Charter & Group Trips Private Charter & Group Trips River trips are a great way for your group to experience true connection. Family reunions, groups of friends, company retreats, If you have ideas, we can help. We offer discounts and custom options for groups of ten or more. We also have the opportunity to charter out a trip and make it private for just your group. Each trip we offer has distinct charter minimums and maximums depending on the river and the time of year. Most of our trip minimums are around 20, but we do have options for smaller groups. We also have a very convenient group organizer management system where group organizers can invite their friends/family to join their trip, view a roster of who has signed up and initiate separate invoices to avoid the hassle of collecting payments. Please contact our office with questions about creating your own private trip for just your group. Phone: 209.962.7873 Email: arta@arta.org Fourteen Rivers, Infinite Possibilities! Explore all of our destinations. Explore