For roughly the first 100 miles, the Appalachian Trail coaligns with the Long Trail, following the main ridge of the Green Mountains. Due west of Killington, the AT departs east for Mount Katahdin, and the Long Trail continues to Canada. According to sectionhiker.com, the entire trail takes the average hiker less than three weeks and is best hiked in the summer to early fall. Temperatures can differ immensely between northern and southern Vermont, and another source suggests September as the best time for southbound hikers to make their journey.

The official northern terminus of the trail lies along the US/Canada border and is denoted by an engraved obelisk. The views from here are quite phenomenal, offering a spectacular finish (or start) to the 273-mile trail.

Sources: http://easternslopes.com/2010/05/08/first-steps-along-the-long-trail/ https://hikeandcycle.com/the-long-trail-5-things-to-know-when-planning-your-hike/ https://en.wikipedia.org/wiki/LongTrail https://sectionhiker.com/how-to-hike-vermonts-long-trail/