Survival of the Fittest obstacle races, mud run, and OCR information, distance, cost, dates, calendar, discounts, obstacles, reviews, and more

The World's Largest Urban OCR. 5km, 10k or Half Marathon. How far can you Survive? Cardiff, Nottingham, Edinburgh, Manchester and London #AreYouASurvivor

Upcoming Survival of the Fittest Events

We don't know of any upcoming events for Survival of the Fittest. 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 Survival of the Fittest

Survival of the Fittest Reviews from the Community