Northampton trails

I did some kayaking and ran some trails in Northampton last weekend. The trails were great, wide and mostly flat--not much in the way of rocks, roots, etc. This I like. The last time I ran trails with rocks and roots (Bigelow Hollow State Park), I twisted my ankle three times and could barely walk a few hours after finishing the run. I like running trails, so perhaps I should slow down to decrease my injury risk. However, running in general is more important to me than running trails. Are Northampton trails the balance?