Spaulding Woods 50K Northfield, NH   Jul 12, 2025

The Spaulding Woods 50K is a technical 5.6-mile loop trail filled with rocks, roots, and foot bridges. To finish the full 50K each runner will have ten hours to complete six laps, or approximately thirty-four miles and 4.2K feet of total gain. The course is over 90% singletrack with a small portion of doubletrack. You will have access to a well-stocked aid station and your own drop bag as you complete each lap.