Four new books we recommend for late-winter running inspiration.

RELATED: The 25 Greatest Running Books of All-Time

Running Your First Ultra: Customizable training plans for your first 50K to 100-mile race by Krissy Moehl
Hansons Marathon Method: Run your fastest marathon (2nd Ed.) by Luke Humphrey with Keith and Kevin Hanson
How Bad Do You Want It? Mastering the psychology of mind over muscle by Matt Fitzgerald
Dirty Inspirations: Lessons from the trenches of extreme endurance sports by Terri Schneider