22nd May 2021

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The Event

International Day of Dirt, the biggest bike event of the year, returns for another incredible day
of mountain bike action on 22nd May 2021.

Aimed at bringing the world’s off-road community together for a day of trail-tearing action, the IDD is the perfect opportunity to join riders everywhere for an exhilarating mountain bike experience.
Men, women and kids of all ages and skill levels are invited to hit the jumps, blast the trails, and soak up the atmosphere on the world’s for the free event, hosted by Chain Reaction Cycles.

Watch the highlights from Kilbrony Park, Rostrevor below.

Share Your Ride

Upload your pics and videos using the hashtags #DayofDirt and #ChainReactionCycles

Where will you be riding?

Make your mark in 2021

Need some ride inspiration for the International Day of Dirt? Choose from over 113,356 trails in 95 countries using the Trailforks map below.

Feature locations

We're also hosting three special events on the International Day of Dirt, so if you're joining us there we're looking forward to seeing you...


Castlewellan hosts the UK hub of our activities, with free bike demos on offer!


Sea Otter Classic is our USA base for the International Day of Dirt, so take advantage of free bike demos on our dedicated skills loop


Kalamunda Mountain Bike Park is our Australian highlight venue, with a free uplift and BBQ, social rides and good times aplenty.

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