Extreme North Dakota Twelve hOur Mountain Bike of Enduring Delirium (END-TOMBED)

Sunday, October 25 2020, Arvilla ND


Race Summary

The Extreme North Dakota Twelve hOur Mountain Bike of Enduring Delirium - it's our annual epic halloween themed bike race.  Taking place in Turtle River State Park, the riders will ride solo or as part of a relay team to try to get in as many laps as possible in 6 or 12 hours.  The course has lots of windy single track, some fast double track, and even a smidgen of road riding (which you'll be loving by the end!). 

2020 Edition Overview

Due to the COVID-19 pandemic and North Dakota state health regulations, race HQ will be outside at the CCC Shelter and we will not be providing racer support (food, water, etc.). You will get a good course, someone keeping track of who wins, and some swag.

Please note that the race is on Sunday this year.

Three Ways to Race

Zombie: Race solo for 12 hours to get the most number of laps of the course.

Zombie 6-Hour: Race solo for 6 hours.

Skeleton Army: Race with a team of up to four people for 12 hours, alternating laps.


See Course Book

Date: Sunday, October 25 2020 
Zombies (12-Hour) and Skeleton Armies race 8:00 am to 8:00 pm.
Zombies (6-Hour) race 8:00 am to 2:00 pm.
Cap: Race will be limited to 100 total riders.
Race (click name to register) Through Oct 10 After Oct 10
Zombie - 12 Hours - Registration Opens September 14th $35 $45
Zombie - 6 Hours - Registration Opens September 26th $25 $35
Skeleton Army - 12 Hours - Registration Opens September 26th $35 per person $45 per person

Youth (still under 18 on race day) save 50% during online registration.
UND and NCTC students save 25% during online registration. Email us from your school account to get a coupon code.

Online registration will close at 11:59 PM Thursday of race week. See course book for information about registering after that.
Refund Policy

    Location: Turtle River State Park, near Arvilla, ND. You will need to purchase a day pass ($7) or have an annual ND State Park pass on your vehicle to enter.  Turtle River State Park has changed the classification of certain trails in the park, so please pay attention to signage when training and ride only where mountain bikes are allowed.
    Entry Includes:  A stellar course, swag, results.
    Categories: Male and Female Zombie, Male, Female, and Coed 2 person Skeleton Army, Male and Coed 3/4 person Skeleton Army.
    Scoring:  Zombies and Skeleton Armies are first ranked based on the number of laps completed (in under 12 hours) and then by the time in which the last lap was completed.  Depending on conditions, 100 miles is a pretty hardcore benchmark to shoot for. A gravel grinder this isn't!
    Other Details: This event forms part of the entry requirement into the Undead Hall of Fame.  In order to achieve Undead Hall of Fame status a racer must complete 100 miles in END-TOMBED and 50 miles (on foot) during END-TRAILS in the same weekend. Good luck. You're going to need it.
    Past Races
    Year Racers Results Photos Video Race Reports Press
    2020-10-25 22 riders Results        
    2019-10-26 18 riders Results     Course changes due to weather just before race, many people deferred.  
    2018-10-27 59 riders Results     New trails! It was muddy!  
    2017-10-28 70 riders Results Wes, Sarah      
    2016-10-29 113 riders Results Wes   Lesley  
    2015-10-24 106 riders Results     Jason  
    2014-10-25 80 riders Results Photos PatCaleb LisaAuralee  
    2013-10-26 110 riders Results Photos      
    2012-10-27 100 riders Results PhotosMore Photos Aaron    
    2011-10-29 76 riders Results Photos Video Minneapolis Musette  

    Profits from this event--and all ENDracing events--will help support Ground Up Adventures, a 501(c)(3) non-profit based on North Dakota dedicated to helping kids get as much adventure as we wished we had growing up.