Q I’m a 40-year-old male who’s been running for more than 10 years. Despite an eight-year gap between my second and third marathons, I still covered the distance without too many problems. However, after 22 miles of my fourth marathon (five months

therapist and biomechanist Irene Davis from the University of Delaware's Running Injury Clinic. "Your threshold could be at 10 miles a week, or 100, but once you exceed it, you get injured." Various studies have identified injury thresholds at 11, 25, and 40

therapist and biomechanist Irene Davis from the University of Delaware's Running Injury Clinic. "Your threshold could be at 10 miles a week, or 100, but once you exceed it, you get injured." Various studies have identified injury thresholds at 11, 25, and 40