100 Acre Challenge obstacle races, mud run, and OCR information, distance, cost, dates, calendar, discounts, obstacles, reviews, and more

We had so much fun last year, we’re doing it again!

The annual 100 Acre Challenge is an obstacle 5K race set in the 100 Acre Wood in Intervale, NH. Competitors will run, swim, crawl, and climb as this 5K challenge takes them into the mud, water, over walls, rock piles and through the wood. It's all in fun and for a good cause with net proceeds benefiting the fundraising campaign for a new Outreach van for the Believe in Books Literacy Foundation. Individuals and teams of two or four are invited and for kids 12 and under there is the Mini Acre Challenge featuring mini obstacles.

Upcoming 100 Acre Challenge Events

We don't know of any upcoming events for 100 Acre Challenge. 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 100 Acre Challenge

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