At its core, Train Like a Mother comprehensively covers how to train for a race, including training plans for four race distances (5K, 10K, half-marathon, and marathon) for both beginner and more experienced runners; the importance of recovery; pre- and post-race nutrition; strength training; injury prevention (and rehab); and everything busy women need to know to add racing to their multitasking schedules. It is all presented with the same wit, empathy, and tone the avid fans connect and identify with.

The book is divided into 13.1 chapters—the distance of a half-marathon, the sweet spot for many mother runners—narrated by both Sarah and Dimity. Like the first book, Train Like a Mother chapters have plenty of sidebars, including Practical Motherly Advice (helpful information about training- and race-related advice), Take It from a Mother (advice and answers from the growing tribe of running moms), and Racy Talk (entertaining, race-related stories from the authors and other moms). The .1 sections are entertaining "commercial breaks" celebrating the sport of running and the added thrill of racing.