From the FAQ:
Q: How far do we ride each day?
A: Our largest mileage day is approximately 300 miles; mostly riding days are 200-250 miles, and the farther East we get there’s typically more traffic so those miles take longer to finish. We like to think we’ve achieved the perfect balance of creating interesting riding days with time for breaks, yet efficient enough to get to D.C. in a reasonable amount of time. Oh yeah, we’ve also arranged for some “play days” on or off the motorcycles along the way – ideal for taking a break, scheduling maintenance or visiting with local friends.