Mount Greylock loop from Mount Williams

If you're looking for a serious road cycling challenge with incredible rewards, the Mount Greylock loop from Mount Williams delivers. This moderate 13.2-mile (21.3 km) route, with a significant 2106 feet (642 metres) of elevation gain, can be completed in about 1 hour and 23 minutes, making it a perfect objective for experienced cyclists seeking a demanding climb to the highest point in Massachusetts. It’s a true test of endurance, offering some of the most challenging road cycling difficulty in the state.

What to expect on Mount Greylock loop from Mount Williams

This route takes you through deep woods, with the terrain steadily climbing as you ascend. While the specific "Mount Williams" portion might refer to a hiking trail, this road cycling route focuses on the iconic ascent to Mount Greylock's summit. You'll experience sustained climbing, especially on the steeper northern approach via Notch Road, which features sections with double-digit grades. As you gain elevation, exceptional Mount Greylock road cycling landmarks and viewpoints emerge, offering sweeping vistas of New York to the west and Adams to the east. The summit itself, crowned by the Veterans War Memorial Tower, provides panoramic views across Massachusetts, Vermont, and New York, a truly satisfying reward for your effort.

Planning your visit

Be aware that the roads up Mount Greylock are closed during winter and typically reopen in late spring once the snow has melted. While the road surface was generally good as of 2020, you should still be cautious of frost heaves and grooves in the pavement, particularly on descents and near trail crossings. The summit can be significantly colder than the base, so pack a windbreaker for the thrilling descent. This is a route best tackled in the warmer months when the roads are clear and conditions are favorable.

Trail details

• Distance: 13.2 miles (21.3 km)
• Elevation gain: 2106 feet (642 metres)
• Difficulty: moderate
• Estimated time: 1 hours and 23 minutes