Women’s Running reconsiders image of fitness with plus-size model - The Globe an Libro Your First Marathon: A Beginners Guide To Marathon Training Before you dive headfirst into marathon prep, it’s important to recognize the level of commitment required. All official marathons involve 26.2 miles of running – a very specific number, and certainly no easy feat. Training usually takes several months, typically between 16-20 weeks, depending on your current fitness level and running...