Odell Gully

This is one of the classic alpine climbing routes on Mount Washington and is widely documented in Northeast climbing references. It follows the steep, enclosed Huntington Ravine, where conditions can range from snow and ice to mixed rock depending on season. The route is significantly more serious than the mountain's hiking trails and is known for objective hazards, including rockfall, ice, and rapidly changing weather. Route-finding can be complex in poor visibility or when the ravine is filled with snow. It is generally treated as a mountaineering objective rather than a hike. The exact difficulty varies strongly with conditions, but it is commonly considered a technical alpine route.

Pinnacle Buttress is a well-known technical climbing line on Mount Washington's Huntington Ravine. It is a more direct and more difficult alpine objective than the standard ravine route. The climb is typically on steep rock with mixed conditions possible, and it can be affected by ice, snow, and verglas. Because of the exposure and route-finding, it is generally considered a serious mountaineering climb. The route is documented in regional climbing guides and is a recognized classic on the mountain. Conditions can make the effective difficulty much higher than the nominal rock grade suggests.

The Tuckerman Ravine Headwall is one of the best-known alpine climbing objectives on Mount Washington. It is a steep, serious line that is climbed in winter and spring when snow and ice conditions are suitable. The route is exposed to avalanche hazard, falling ice, and rapidly deteriorating weather. It is a classic New England mountaineering route and is widely documented in guidebooks and local climbing literature. The difficulty and character vary substantially with conditions, but it is not a hiking trail. Climbers typically treat it as a technical snow and ice ascent.

Boott Spur is a documented alpine route on the south side of Mount Washington and is commonly referenced in mountaineering sources. It is generally less technical than the major ravine headwalls, but it remains a serious mountain route in winter conditions. The line can involve steep snow, wind-scoured ridges, and mixed terrain. Exposure to weather is a major factor, as on all routes on Mount Washington. It is a recognized climbing objective rather than a simple trail hike. Conditions can make the route much more demanding than its nominal grade implies.