Race Guidelines  The following Guidelines and Rules are to be adhered to by all participants in the White Tanks Grinder event. The intent of these rules are intended to provide integrity in competition and support a safe, enjoyable racing experience for all involved.  


GENERAL RULES TO RACE BY:  It is each and every participants responsibility to be aware of and to comply with these rules! Failure to do so may result in disqualification. White Tanks Grinder does not require a license to participate.  

  • Be kind to everyone. Nobody likes "that guy/girl". Don't be that guy/girl.
  • If somebody is hurt on course and you find them, it is YOUR responsibility to find a course marshal and let them know! No race is so important that you can't help someone out.
  • Only registered racers may compete in an event. No kidding, you must be registered to race. An official race number plate must be displayed by each racer. No competitor shall cut, fold, mutilate, apply stickers to or alter in any way the number plate. Numbers are not transferable. Penalty is simple, the score table will not be able to score you, when you complain it will lead to disqualification.
  • All competitors must wear a properly secured helmet, complying to DOT or CPSC Standards at all times during competition as well as when pre-riding or warming up on the course.
  • Competitors must wear proper riding attire, including a shirt, shorts, and fully-enclosed shoes during competition.
  • MP3 players, and other personal listening devices are allowed but must not interfere with a racer's awareness of other racers and their surroundings on the race course.
  • Each competitor is responsible for having their bike in good operating condition. All Competitors must be self-sufficient. All repairs during a race must be performed by the individual racers. Tools and spare parts used in a repair must be carried by the racer. No off-course assistance is allowed. Exception to this rule - If the racer makes it back to the scoring table, the officials may grant aid to the racer (such as a spare bike or parts) and allow the contestant to re-enter the race where he left off and finish that race as not to have a DNF.
  • Deviation from the marked course will result in disqualification unless the competitor reenters the course at point of exit. If you cut the course, intentionally or not, own up to it, we'll let you finish in last place (it happens, we understand) and still earn points. If you don't own up to it, and at least 3 people can testify to it, we kick you out of the event and publicly humiliate you. It's not cool. This includes ducking under any flagging marking the boundaries of the finish chute. A competitor that purposely leaves the marked course during competition is deemed to have retired from the race and will be scored as a DQ or DNF.
  • Feeding and/or "hand-ups" may occur when your hungry or thirsty and on any part of the course. However any interference with another competitor during a hand-up is grounds for disqualification so be safe and smart and educate your crew. Two (2) designated feed zones are located on the courses, please try to use them to avoid interference with other racers.
  • Any competitor littering the course with a gel packet, food wrappers or other waste will be publicly addressed and humiliated at any given chance by anyone and will be asked to walk the track in bare feet and pick up all the garbage left by the race. Tread lightly and take out what you bring in. Keep our trails beautiful.
  • A competitor on their bike has the right-of-way over one pushing their bike. Lapped racers must yield the track immediately. Yield the track (fastest part of the trail) when possible when asked. It is the responsibility of an overtaking rider to pass safely. No racer is expected to stop their race to allow other racers to pass. However, no rider shall intentionally impede the progress of another. A rider should make his/her presence known when overtaking a slower rider (i.e. "On your left. Please!"). Especially in single-track, await return communication from the rider being overtaken that it is safe to pass.
  • The use of profanity or flagrant discourtesy directed at another competitor, race worker, or spectator is grounds for disqualification from an individual event, first offense, and the series upon the second offense!
  • No cheating, bad sportsmanship, throwing bikes, temper tantrums, uproarious behavior, or making a scene. We'll kick you out on principle.
  • Mountain biking is an individual sport, entering into agreements or forming alliances (monetary or otherwise) to control or alter the results of a race will result in disqualification from that individual event.
  • A race may be stopped by the race director in case of severe injury to a rider or life threatening weather. Racers failing to heed the instruction of medical personal and/or course marshals attending to an injured rider will be disqualified!
  • Fat Tire Bikes – this category is designed for “fat bikes” – minimum tire size 3.8
  • Clydesdale is defined as 200+ lbs.
  • If you think there is an error in your results, bring it to scorers attention like a responsible adult, that is why we supply preliminary results during the race. If you corner race officials and attack them about a finish error, we will kick you out and DNF you on principle. Nobody deserves that kind of behavior.
  • Protests of results, the conduct of a racer, or any other matters related to the race may only be filed by a competitor in the event or a race official. Protests must be reported to or filed with a timing official within 10 minutes of the completion of an event, posting of results, or a ruling to be considered valid. All results become final as of the presentation of awards.

Final interpretation of the rules is up to the event director. These individuals have control over all competitors, scorers, and officials at their event and their decision on these rules, and any situations not specifically covered by these rules is final.

White Tanks Grinder is a fund-raiser for the White Tanks Mountains Conservancy – 100% proceeds benefit the Conservancy.  



Beginner: (Men & women age 15 and above) A Beginner Category competitor shall be a new or recreational racer with limited riding time. Racers with 2 or more years of race experience and/or training more than 4 hours per week should compete in the Sport class. For those finishing at the top of their age class we strongly encourage that you move up the Sport class for the next race season. The race distance for Beginner Category event will be 6-15 miles. Final course TBA – permit pending.  

Sport: (Men & women age 15 above) A Sport Category competitor is an experienced racer of average ability. The race distance for Sport Category Series event will be 15-30 miles. Final course TBA – permit pending.  

Expert: An Expert Category competitor is a racer looking for a challenge beyond Sport. The race distance for Expert Category will be 20+ miles. Final course TBA – permit pending.  

Fat Bike: an open age category for all bikes with 3.8"+ tires sizes. All ages and genders are combined for this fun and unique class.  

Clydesdale: an open age category for all participant’s weighing 200 lbs. or more. All ages and genders are combined for this fun and unique class.  

CLASSES  A participants racing age is used for class placement and is determined by their age as of December 31, 2017.  

Race are scored in these categories and classes: Classes may be combined if less then 5 racers in any single category.  

Race Categories (Divisions) & Classes

All numbers denote age in years.  

Men | Beginner | Sport | Expert
Junior/13-14, Expert 15-18

 Senior/19-29, 30-39, 40-49 and 50+

Women | Beginner | Sport | Expert

Junior 13-14, Expert 15-181
Senior/19-29, 30-39, and 40+

Fat Tire

Open class - all ages and genders combined  


Open class - all ages and genders combined – 200+ lbs. 



Changing classes is to be done prior to race start. No changes after race starts will be allowed. It’s not as easy to change in the computer as you think.  


As a fund raiser, entry fees are non-refundable, non-transferable, and cannot be extended to a following year.  


Individual Event Awards:

Beginner, Sport, Expert: The top finishers in each age and sex class, at each event, will receive awards, (medals) at the discretion of the organizer. The number of places awarded is based on the average number of racers in each class. Classes may be combined if less than 5 racers in any single category.  


Award winners wishing to claim their award are strongly encouraged to participate in the official awards ceremony at the conclusion of the races as winners must be present to claim award.  





Rules and Regulations White Tanks Grinder (pdf)