Boulder Beast

Boulder Beast takes place in Lock Haven, Pennsylvania, on September 19, 2026. Organized by PA Trail Dogs, the event offers two trail distances: a 24-mile and a 25K (15.5 miles). The name gives you an idea of the footing: boulders and rocky mountain trails are the theme here, which is common in central Pennsylvania.

Both distances are on the long side for a trail race, and rocky terrain means they will take considerably longer than the equivalent road distance. The 25K is a good challenge for runners who have done a trail half marathon and want more climbing and more technical ground. The 24-mile edges toward ultra territory and suits runners looking for a hard day before a fall 50K. Prepare with a 12- to 16-week plan built around one long trail run per week, regular hill repeats and some ankle-strengthening work. Practice running rocky descents with short, quick steps, since the downhills are where technical courses take their toll.