Happy Valley Half Marathon & 5K 2026

The Happy Valley Half Marathon & 5K takes place in Northampton, Massachusetts, during peak fall foliage. Runners can choose between a half marathon or a 5K. The course follows New England roads at the season's most colorful point. The route showcases the roads around Northampton. Afterward, the event includes a finish-line gathering with live music, food trucks, breweries, and drinks. Local runners support the event, and many participants return annually. The race also collaborates with a selected charity partner beyond race day.