The railway was engineered by Sylvester Marsh and completed its first full ascent in 1869.
It was designated a National Historic Mechanical Engineering Landmark in 1976.
The track was originally constructed with iron rails that have since been upgraded to steel.
The steam locomotives utilize a unique vertical boiler design to ensure water levels remain level on steep inclines.
Mount Washington is famous for recording some of the highest wind speeds ever measured on the surface of the Earth.
The railway operates on a 'rack' system where a center gear meshes with a ladder-like track to prevent slipping.
Unlike standard trains, the engine is always positioned on the downhill side of the passenger coach for safety.
The trip takes approximately one hour to ascend and one hour to descend.
The Mount Washington Cog Railway is the world's first mountain-climbing cog railway, utilizing a rack-and-pinion system to ascend to the highest peak in the Northeastern United States. Located in New Hampshire’s White Mountains, the railway climbs 3,567 feet to reach the 6,288-foot summit of Mount Washington. The track features a maximum grade of 37.4 percent, making it the second steepest rack railway globally. Passengers travel in custom-built cars powered by either historic steam locomotives or modern biodiesel engines. The round-trip journey encompasses diverse ecological zones, transitioning from hardwood forests to sub-alpine tundra. At the summit, visitors access the Sherman Adams Visitor Center and the Mount Washington Observatory museum. The railway remains fully operational as of June 2026, offering transit to the peak even when the auto road faces weather closures.
The observation deck at the summit provides the best vantage point of the Presidential Range.
Bring layers of clothing regardless of the base temperature, as the summit is often 30 degrees cooler and significantly windier.
Book reservations well in advance, especially for weekend slots during the peak foliage season.
Hydrate before boarding, as the rapid gain in elevation can lead to mild altitude symptoms in sensitive individuals.
Do not attempt to hike down the tracks at any point, as this is strictly prohibited and dangerous.
Operates seasonally from late spring through late autumn; service is dependent on high-altitude weather conditions.
Closed-toe shoes are recommended due to uneven rocky terrain at the summit.
