Online / Reg

{{option.reg_closed_message}} {{ 'REG-OPEN-EARLY' | translate:option}} {{ 'REG-OPEN' | translate:option}} Early Registration for Life Time Members available on {{option.early_opening_date}}. Early Life Time Registration available. Enter your Life Time Fitness Membership ID to unlock this Early Registration. You can find this 9-digit # on the back of your Membership Card by the barcode. Life Time Membership ID:

No emails or URLs allowed

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Waiver of Liability: In consideration of your accepting this entry, I, the undersigned, intending to be legally bound, hereby, for myself, my heirs, executors and administrators, waive and release any and all claims for damages, demands, actions and causes of actions against Big River Running Company, LLC, Big River Race Management, LLC, Indian Camp Creek Park, St. Charles County Government, Castlewood State Park, their affiliates, subsidiaries, officials, representatives, employees, successors and assigns for any and all injuries suffered by me in this event. I attest and verify that I am physically fit and have sufficiently trained for the competition of this run. Further, I hereby grant full permission for the free use of my name and/or any photographs, videotapes, motion pictures, recordings, or any other record of this event for any legitimate purpose.
Terms & Conditions: The terms and conditions of race registration is that all sales are final. Refunds and deferrals are not permitted. Races are inherently complicated to produce and include many logistics including ordering shirts, awards, beverages and other course items that account for participants as they register and cannot be undone.

The cutoff time for the 20K is 1:30 PM

Got it! (Sold Out)

You must start your final loop before 2 hourse and 50 minutes from your start time.

Got it! (Sold Out)

$3 of each registration fee goes to the parks

Got to keep the parks beautiful! (Sold Out)

What is your estimated pace per mile?

Our trail races use a corral to organize everyone at the start, so please be honest! If you're unsure of trail pace, add 1:30 per mile to what you would run on the road.

Would you like to receive the Big River Store Newsletter?

The Big River Store Newsletter is sent out bi-weekly and packed full of training tips, new shoe and apparel releases, trail reviews, health tips, and in-store events.

Yes, please! (Sold Out)

No, thanks. (Sold Out)

Would you like to receive information about upcoming Big River timed events?

The Big River Race Management Newsletter covers the latest races and featured events, and is sent bi-weekly. We will never share your email address.

Yes, please! (Sold Out)

No, thanks. (Sold Out)

Trail Series Registrant

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Wave

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Challenge Runner

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I understand that I am registering for a race both on Saturday and on Sunday.

Yes (Sold Out)

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