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MTB Racing

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Dirty Spokes 6/3 Hour Mountain Bike Race Presented by MAXXIS and brought to you by Roswell Bicycles and Scott!

Location: Fort Yargo State Park, Winder, Georgia 
Date: May 12, 2018 (Saturday) 
Format: Mountain Bike 
Distance: 2 options: 6 or 3 hours
Course Map: GPS | Race Course Preview Video
Series: Chainbuster
Presenting Sponsor: Maxxis Tires
2017 Results: 6HRSolo | 6HRTeam | 3HR
2016 Results: 6HSolo | 6HTeam | 3Hr
2015 Results: 6HR Solo | 6Hr Team | 3Hr
2014 Results:
 6H Solo | 6H Team | 3H Solo | 3H Team
2013 Results: Solo | Team 
2012 Results: Solo | Team
2017 Photos: Wingfoot Photos

REGISTER: On-Line Registration | Mail In Waiver 




6 HOUR RACERS 10:00 A.M. 

3 HOUR RACERS 10:15 A.M. 



We are thrilled to have Roswell Bicycles and Scott join Dirty Spokes for the 2018 calendar year! FREE Race Entires! Buy any Mountain Bike, or $250 in Scott Merchandise from Roswell Bicycles and get a free individual race entry for the Dirty Spokes 6/3 Hour Mountain Bike Race, May 12th, 2018! 

We are in our 13th year of putting on the Dirty Spokes Fort Yargo State Park Endurance Mountain Bike Race and as enthusiastic as when we started it (thanks to racers and riders like yourselves). We appreciate the support you all have given our events for the last 12 years and look forward to seeing you out there again this year!

We will be giving away thousands of Dollars in Product for the Dirty Spokes Fort Yargo Mountain Bike Race Presented by Maxxis Tires and brought to you by Roswell Bicycles and Scott!

Roswell Bicycles and Scott have come up HUGE and will be providing all 1st Place 6 Hour Finishers with a Scott Stego Helmet ($170 Value) for teams BOTH team members will receive a Scott Stego Helmet! They will also be providing all 2nd Place 6 Hour Finishers with a Scott ARX Helmet ($100 Value) for teams BOTH team members will receive a Scott ARX Helmet! We will have a mixture of other SWEET Prizes for 3rd Place 6 hour Finishers!

In Celebration of our 13th Year of Playing in the Dirt (est. 2005) we will give prizes to the 10th, 20th, 30th, 40th, 50th, 60th, 70th, 80th, 90th and 100th Riders that cross a certain point on the course (1st Lap of the Race)!

Dirty Spokes is thrilled to be race number 3 of the Chainbuster Race Series again this year (for complete series rules and information please visit Chainbuster Racing)! If you are racing for series points you may register for the 6 hour or 3 hour race.

Please note... we are staging the race out of the mountain bike parking area again this year, Entrance "A" (sweet set up this past year)! Pit areas will be in the main mountain bike parking lot (down the asphalt road leading to the trail) as well as across the street by the tennis courts (parking lot and open field). The "nature center pavillion" turn around will serve as the timing area and transition area! 

Who are the brains behind Dirty Spokes? We are mountain bike enthusiasts like the rest of you. This event was designed for mountain bikers to have fun, be competitive and provide an endless supply of great memories! No matter the level (beginner to expert) it is there for you. We are not trying to re–invent the wheel just trying to perfect the roll. We are glad you are interested in the race and hope to see you there!

The 2018 Course has been finalized! It´s fast, fun and probably flows the best of any course we have had an opportunity to put together! Start at the mountain bike parking lot, follow outer loop (Going Clockwise), bypass creek crossing, cross over boys home road, bypass 3 step hill (stay left), stay on outer loop, just past the bottom of the dam bypass monter mile (turn right at monster mile and head up the hill all the way to the gas pipeline / cross over gas pipeline onto outer loop / stay right on outer loop at other end of monster mile) at the bottom of that section when you reconnect and cross over the gas pipeline staying on the outer loop until you reach the "steel bridge". After the steel bridge stay straight over the top of the hill (deadwood hill) by the chicken houses (again just to take a little distance off) onto the outer loop. Continue on outer loop past the primitive camping area and up over crossing entrance b road. Stay on outer loop past picnic shelter number 5 and up through graveyard hill... just past graveyard hill stay right (crossing the road) and head over and next to the mini putt putt section of the course. Cross over the asphalt road and reconnect to the outer loop. After that we will remain on the outer loop for the rest of the course. Course is dialed in right at 9.75 miles. Intentions are to get lap times about 40-50 mins or so. The idea behind the layout of this course is to hopefully get the individual and team times inside an hour (hopefully putting some strategy together for some of those teams to get that 3rd lap in the 3 hour race! Likewise in the 6 hour race try to get that 6th lap and provide some opportunities to potentially getting a 7th lap if possible)!

Giant thanks to the Yargo Trail Crew for the time and energy they have put into maintaining these trails! If you haven't ridden there ⁄ you´re gonna love it! If you have ridden there you know what we mean! A portion of your race day proceeds will be donated back to the Yargo Trail Crew!


3 Hour Races
Team Categories -> Description  Cost 

  • Solo Novice Class Male (Intro Class / First Time Racers Only / Open No Age Groups) - $30.00
  • Solo Novice Class Female (Intro Class / First Time Racers Only / Open No Age Groups) - $30.00
  • Jr 1 Male (14 and Under) *1 Lap Only
  • Jr 1 Female (14 and Under) *1 Lap Only
  • Jr 2 Male (15-18) *2 Laps Only
  • Jr 2 Female (15-18) *2 Laps Only
  • Solo Base Class Age Groups Male: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Base Class Age Groups Female: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Sport Class Age Groups Male: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Sport Class Age Groups Female: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Expert Class Age Groups Male: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Expert Class Age Groups Female: 13-19, 20-29, 30-39, 40-49, 50+ - $35.00
  • Solo Single Speed Male (One Category) - $35.00
  • Solo Single Speed Female (One Category) - $35.00
  • Solo Clydesdale (One Category) - $35.00
  • Ultra Masters (60 Plus Years of Age) - $35.00
6 Hour Races
Team Categories -> Description Cost
  • Solo Sport - Female - $50.00
  • Solo Expert - Female - $50.00
  • Solo Beginner - Male - $50.00
  • Solo Sport - Male - $50.00
  • Solo Expert - Male - $50.00 
  • Solo Clydesdale - Male - $50.00
  • Solo Masters (40-49 Years of Age) - $50.00
  • Solo Grand Masters (50-59 Years of Age) - $50.00
  • Solo Ultra Masters (60 Plus Years of Age) - $50.00
  • Single Speed – Solo - One Category - $50.00
  • 2 Person Male - $100.00
  • 2 Person Female - $100.00
  • 2 Person Co-ed - $100.00
  • 2 Person Expert (Male) - $100.00
  • 2 Person Masters Open (both racers 40+) - $100.00
  • 3 Person Male - $150.00
  • 3 Person Co-ed - $150.00
  • 3 Person Just Having Fun - $150.00
  • 3 Person Junior Male               90.00 (Medal Only Category)
  • 3 Person Junior Female           90.00 (Medal Only Category)
  • 3 Person Junior Coed            90.00 (Medal Only Category)


Regular Registration Fees through May 1st, 2018

Late Fees Apply to anything received after May 1st, 2018 (On Race Day Also)!

We will be taking Race Day Registration!

No Refunds: Race Entry Fees are non-refundable and non-transferable. Unless otherwise posted the race will be held. Race may be postponed due to natural hazards uncontrollable by Race Director. If race is postponed for any reason, there are no refunds and entry fee will be forwarded to the rescheduled date (TBA).


PASS LEFT: If you approach a rider and are looking to pass them and you have room to pass on their left call "pass left".

PASS RIGHT: If you approach a rider and are looking to pass them and you have room to pass on their right call "pass right".

LITTERBUG: Person who leaves trash on the course. Please do not leave tubes, gel, goo, nutrition bar packs on the course. Please do not leave tubes, gel, goo, nutrition bar packs on the course.

DISQUALIFIED: Person ⁄ team who doesn’t follow rules.

WINNER: Person ⁄ team standing on the podium at the end of the race. 6/3 hour race team with most laps at the end of 6/3 hours.


All 6 hour racers will start at 9:00 a.m. with an "on bike" start. No Lemans Start. All 3 Hour racers will start at 9:15 a.m. with an "on bike" start. No Lemans Start.

As you approach the transition area you have one of three choices: (1) go out on another lap, (2) pass the timing chip to another rider as they go out onto the course (teams), (3) stop. 

If your team has a mechanical out on the course you have a couple of options:  (1) fix your mechanical as quickly as you can and get riding again. You don´t have to be self supportive (meaning) if another rider comes along and they have a tool, tube, knowledge, etc. you need, you may get help from them! Only penalty here is you may loose time, get riding fast to make up for it!  (2) if you have a rider that has a mechanical or has a wreck or anything that hinders them from finishing a lap, they may call in and get another rider out on the course. EITHER WAY THE NEW RIDER ON THE COURSE MUST CHECK IN (BUT DO NOT BRING YOUR BIKE WITH TIMING CHIP NEAR TIMING AREA)!!!  Once your rider calls in and reports to CANCEL the lap it is CANCELLED. 

Racers may ride as many laps consecutively as they wish. Each racer must ride a minimum of 1 lap during the 3 hour period. All laps must be completed by 12:15 p.m. or they will NOT count. 3 HOUR RACE FINISHES AT 12:15p.m.

THE 6 HOUR RACE FINISHES AT 3:00 p.m. The laps must be completed by 3:00 p.m. or they will NOT count.

The 3 hour race winners will be the ones that have tallied the most laps at the end of the 3 hours!

The 6 hour race winners will be the ones that have tallied the most laps at the end of the 6 hours!


PACKET PICKUP (We will be taking race day registrations as well):  

  • Race Day Registration / Packet Pick-Up: 7:00-8:30 a.m.
  • Kids Race 8:00 a.m. (FREE)!
  • Racers Meeting 8:30 a.m.
  • Bikes Positioned At Starting Line 8:45 a.m.
  • 6 Hour Race Starts 9:00 a.m.
  • 3 Hour Race Starts 9:15 a.m.
  • 3 Hour Race Finishes 12:15 p.m.
  • 6 Hour race Finishes 3:00 p.m.  


Fort Yargo State Park
210 S. Broad Street
Winder, Georgia 30680
(Entrance "A")

Remember Georgia State Parks Require a $5.00 Fee (1 Day Pass) or you can purchase a yearly pass! Start ⁄ Finish Area will be at the main mountain bike parking lot this year! Enter park drive straight in go past the guard shack (1st stop sign), at your second stop sign (mountain bike parking lot on left, tennis courts on right)... All "pit areas" will be on a first come ⁄ first serve basis. Course will be set (for pre-ride) ⁄ transition area will be set by 5:00 p.m. on Friday afternoon. As we have always done please allow the solo racers to pit the closest to the course and the teams in back...


You will be allowed to camp the night before the race at the start ⁄ finish area (the charge to camp here is the same as it would be in a regular camping spot ⁄ we will not be collecting these fees ⁄ park ranger will come by and collect these from you)... or if you just want to come out and set up your pit areas on Friday in preparation for the race you are welcome to do so (no charge to leave 10x10 tents ⁄ pit areas set up the night before).  


We will be doing chip timing RFID Timing System (each participant will receive their own timing chip at the registration table 5⁄12⁄18 – your timing chip will correspond to your name and bib number). We do not need to collect your timing chips back after the race.


As each of you know the Yargo Trail Crew has done a great job with these trails over the last year and they are gonna be fun! The course will be right at 9.75 miles per lap. Course should be very fast and flowing: Click here for GPS Data (trying to set it up so the lap times are inside an hour per lap)... Course will consist of 90% outer loop (no monster mile, horseshoe drop and bypass 3 step hill). 


The trails at Fort Yargo State Park are outstanding (this course is one of our favorites)! This might be the fastest and best flowing course we have put together at Yargo! Thanks to the work the Yargo Area Bike Association has done with these trails (should see some really fast lap times). This race is very scenic and offers both tight twisty single track, double track trails, some roots, rocks and some sweet elevation change! Garmin 705 measures course at 9.34 miles; Calibrated Bicycle Computer "wheel" measures course at 9.75 miles. Please note GPS Units do not capture every twist and turn in the woods as bicycle wheel does roll every twist and turn. Race will start in entrance "A" mountain bike parking lot and will be ridden in a clockwise direction. The course is beautiful and offers something for every mountain biker truly wishing to ´ditch the city´. Nestled in the woods of suburban Atlanta lies a true gem. Once you descend into the woods, you will forget your in the city. As a matter of fact, you will come to know why we follow the creed ´Ditch the City´. We will NOT use the "horseshoe drop" or the "monster mile" for the mountain bike portion of the course.


Awards will be given out when we have enough finishers in to fill the categories. Medals and prizes will be given out to the top three finishers in each category! 


We will have a kids race (FREE of Charge)! The kids race will be on the Turtle Creek Mountain Bike Trail (across the street from the main mountain bike parking lot and next to the tennis courts)! The course is right at .95 and very beginner friendly! Check out the kids route GPS Data! Race will start at 8:00 a.m. All parents must sign the waiver form for the kids... Race is for kids 12 and under!