The Inferno obstacle races, mud run, and OCR information, distance, cost, dates, calendar, discounts, obstacles, reviews, and more

Use discount code INFERNOMRG10 for 10% off your The Inferno registration!!!!

The Inferno is an extreme obstacle course biathlon featuring a distance swim and is now offered in two lengths (13.1 miles or 6 miles). We've developed a number of challenging obstacles spread out over a rugged terrain in the scenic backdrop of the Pacific Northwest. You'll climb hills, haul sandbags, flip tires, climb ropes and walls, traverse monkey bars, and now SWIM your way to the finish line! But what makes us really different than all the other races out there? You won't find any mud obstacles on our course! Why? Because mud is not an obstacle, it's a photo op!

PLEASE NOTE: It appears this event currently is not in operation. Luckily, Mud Run Guide has hundreds of exciting events in your area, and many are coming up soon! If you have any questions, please contact the event directly from their website link. If you are the owner of this event and you would like to re-enable your listing, please contact us at

Upcoming The Inferno Events

We don't know of any upcoming events for The Inferno. You can check out our list of past events and reviews below, or if you know of an upcoming race, add it to our calendar!

Browse our calendar of previous mud runs, mud races & obstacle races for The Inferno

The Inferno Reviews from the Community

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