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Mount Washington Observatory Overnight Mountaineering Trip

Join Synnott Mountain Guides for a unique experience learning mountaineering skills and spending the night at the Mount Washington Observatory. Photo: Sunset and a sea of clouds from the summit, photo courtesy Mount Washington Observatory.

It’s hard to imagine a better outing in the White Mountains than an ascent of Mount Washington with an overnight in the Observatory. On the way up we can ascend the peak by any number of routes. The good news is that when you get to the summit, instead of turning around and wearily hiking back down, you’ll pry open the heavy door of the Observatory and soon find yourself transported to another world.

The maximum group size is 9 people (plus guides) and these trips sell out fast. The price of $650 per person includes equipment rental, dinner & breakfast in the Mount Washington Observatory, plus two days of guiding on the mountain.

While the Observatory is a busy, full-time research station, there are occasionally single dates available for private parties of six or more to schedule a custom overnight. If you have a group that is interested, be sure to get in touch with us and we’ll see if we can arrange a private overnight.

We have one trip scheduled for the winter of 2019/2020:

  • February 1-2, 2020 SOLD OUT, but stay tuned as we may have another trip later in the winter.

Cancellations are unlikely, but you can contact SMG if you’d like to be put on a waiting list. For future trip announcements, please sign up for our email list or follow us on Facebook.

Out of stock

Course Information

You’ll sleep in a comfortable bunk and enjoy a nice dinner prepared by the Observatory staff, in addition to snacks and drinks. In the evening you will get a tour of the weather observation room and you’ll have the chance to speak with some of the observers and to learn about meteorology, local Mt. Washington weather and other important work that is done at this unique station. Sleep in until breakfast time, then by mid-morning we’ll begin the trek back down, either via the Lion Head winter route or possibly Boott Spur.

*** In the event that adverse weather conditions prevent the group from descending after the night at the Observatory, participants will be charged $195 per additional night. ***

Mountains, Cliffs, & Routes

Mount Washington, NH


Beginner - Advanced


2 Days w/ an Overnight





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