The Book

For runners of every level looking to take the next step in their training, Build Your Running Body presents a breakthrough exercise plan that goes beyond the conventional pursuit of mileage. The best way to improve our personal bests, run more comfortably, and reduce injury is to target all the components that go into each step we take: muscles, connective tissue, the cardiovascular system, the nervous system, hormones, the brain, and more.

This illustrated training manual shows us how, with step-by-step photo instruction and exercise regimens fine-tuned to individual skill levels. Featuring a wide-ranging slate of over 150 workouts—from weightlifting and cross-training to resistance exercises and plyometrics—as well as a nutrition guide with dozens of recipes to help speed recovery and cement endurance gains, Build Your Running Body presents the ultimate program for runners seeking whole-body fitness.

The Coach

Pete Magill is a 56-year-old masters runner and coach, co-author of the book Build Your Running Body (The Experiment, 2014), author of The Born Again Runner (The Experiment, 2016) & the soon-to-be published SpeedRunner (VeloPress, 2018), and creator of the SPEEDRUNNER training system. He lives in South Pasadena and competes for the Cal Coast Track Club.

Magill has coached at the youth, high school, open, and masters levels. As a masters athlete and coach, he’s led his Southern California clubs to 19 masters national championships in cross country and road racing. He’s won the individual title in six masters national cross country championships, holds multiple American & World age group records, and ran 14:45 for 5000 a few months before turning 50, a time never matched or beaten by a runner 49 or older.


  • Lead author of Build Your Running Body (The Experiment, 2014)
  • Author of The Born Again Runner (The Experiment, 2016)
  • Author of SpeedRunner (VeloPress, 2018) and Creator of the SPEEDRUNNER Training System
  • 2016 Inductee: USATF (USA Track & Field) Masters Hall of Fame
  • Distance Running Coach for the California Triathlon Club
  • Masters coach for the So Cal USATF club Cal Coast Track Club
  • Sprint coach for La Canada High School (CA)
  • Led his club to 19 national masters championships in cross-country and road racing
  • Formerly a Senior Writer and Columnist for Running Times Magazine
  • Fastest-ever American age 50+ at 5K (15:01) and 10K (31:11); 2nd fastest for Half Marathon (1:10:19)
  • 14:45 5K at age 49 – world record for age 49+
  • Six-time overall Masters National Cross-Country Champion (13-time age group champion)
  • 2007, 2008, 2011, 2013, & 2015 USA Masters Cross-Country Runner of the Year
  • 2006 & 2007 USA Masters Track & Field Age Group Athlete of the Year
  • 2009 & 2012 USA Masters Road Race Age Group Athlete of the Year

The Philosophy

The Build Your Running Body training approach is based upon a simple premise: If you want to become a better runner, you must begin by building a better running body.

And how do we do that?

Just as weightlifters target muscle groups, we runners need to target the individual components of our running body. Specificity in training is the key to running fitness.

Some of our running components are easy to identify: muscles, nerves, connective tissue, and the cardiovascular system. Some are more elusive, like hormones and our brain’s regulation of effort.

Once a component is identified, we target it with a workout designed specifically to produce maximum improvement in that component.

By isolating each component, two things happen: We train the component to 100 percent of its potential, and we don’t waste energy overtraining our entire body in hopes of achieving the same effect. The result is a variety of workouts–from distance runs to speedwork to resistance training, plyometrics, and form drills–that maximizes the benefit of each training session and leads to top fitness and performance.

Improved running performance and whole-body fitness aren’t unsolved mysteries. Coaches, athletes, and exercise physiologists have been working on both for decades. The trick lies in utilizing advances in training to realize each runner’s personal fitness goals. While it’s tempting to embrace magic bullet solutions (to believe that success can be had by running barefoot, counting your strides, or embracing a fad diet), the truth is that your body is an incredibly complex biological machine with hundreds of working parts, and good training demands that you target all of them.