Crap! Thousands Become Ill After Mud Run - Women's Running

Why Running in Mud Is a Really Bad Idea, Smart News

When Is It Too Cold to Run Outside? – iRunFar

The simple reason why we flock to obstacle races and ultra marathons - Los Angeles Times

Whose Development?: Human Rights Abuses in Sierra Leone's Mining Boom

Running postpartum: How to get back to running after giving birth

What Is Mud's Dirty Little Secret? - YES! Magazine Solutions Journalism

The Mississippi River's floodplain forests are dying. The race is on to bring them back. - Investigate Midwest

10 Things We Wish We Knew About Tough Mudder — F&L

Searching for Survivors After the Floods in Libya - The New York Times