About Hillary J. Greene

Hillary J. Greene is an ACSM Certified Exercise Physiologist, Personal Trainer, Exercise is Medicine Level 2 credentialed, and a graduate of the Exercise Science program at Western Kentucky University. She works toward building everyday warriors as an online fitness coach. She is a DGearOG sponsored athlete and a member of the Social Misfits team, a group of ass-kicking OCR enthusiasts. You can follow Hillary's journey training for OCR and the apocalypse under the handle @NerdRageFit on Instagram. Visit for online training programs!

Fighting Physiology: How the Kentucky Mule Slayed the Devil

By |December 10th, 2019|

Mud Run Guide Crew Member Hillary Greene discusses overcoming physical and mental barriers to kick ass in 2019.

Gear Review: Ultra-OCR Man Book Review

By |December 3rd, 2019|

Ultra-OCR Man is a hell of a ride and a read from start to finish, best consumed by current OCR athletes, but is relatable to anyone looking for an inspiring human interest read.

World’s Highest OCR to Debut in September 2020

By |November 22nd, 2019|

Touted as “the adventure of a lifetime,” the World’s Highest OCR aims to break a Guinness World Record in 2020 for the world’s highest obstacle course.

Grit & Glory: A Warrior Living in the Now

By |November 14th, 2019|

OCR is a family affair for Buffy and the rest of the Reas. Learn more about her inspiring story!

Race Recap: Spartan Fort Campbell Super/Sprint Weekend 2019

By |October 24th, 2019|

Spartan Race returns to Fort Campbell forna Sprint and Super Weekend.

Race Recap: Spartan Chicago Beast #2 / 10.5.19

By |October 14th, 2019|

While the name might have been a little bit of a misnomer, Spartan put on a great race for the fall Chicago Beast.

Mud Run Guide Interview with Rob Dickens, Rugged Races Senior VP

By |September 17th, 2019|

Hillary Greene talks about mergers, new obstacles, and what OCR looks like without Warrior Dash with Rob Dickens, Senior VP of Rugged Races.

The Physiologist Files: Altitude (Part 3 of 3)

By |September 11th, 2019|

In the third part of the series, exercise physiologist Hillary Greene discusses the physiological effects of racing at altitude and how best to adapt.

From Lone Wolf to Wolfpak: An OCR Love Story

By |September 9th, 2019|

OCR has been a huge part of John and Rachel's relationship, so when it came time to plan a proposal, John said the muddier, the better!

Race Recap: Rugged Maniac Indiana 2019

By |September 5th, 2019|

One Mud Run Crew member takes on her first Rugged Maniac race and finds that it is a great race for athletes of all experience levels.

Mud Run Guide
Welcome to Mud Run Guide - the worldwide leader in mud runs, obstacle course races, and outdoor running adventures. Established in 2012, our focus is to provide you with the best events, discounts, news, reviews, gear, and training for the sport of OCR.