Hi Robert- We run Guided Tours on an on demand basis if you do not have a reservation. The last tour can depart as late as 5pm depending on how the schedule shakes out for the Walk- In trips for the day. You can also make a reservation online at www.mt-washington.com In that instance the last reservation tour departs promptly at 3:45pm with a return time of 5:45pm Also- Important to know in case you are traveling with a National Park Passbook- The Auto Road is a privately owned business and is not part of the parks system. There is a NH State Park at the summit- but we are not part of the parks.
Not sure...I did not do the tour
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