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SEPTEMBER 9th, 2023

CYCLO X Harlow Platts- September 9th, 2023


The 6-race Shimano CYCLO X Series is back for its 24th edition!  The action starts at race #1 Harlow Platts!  The Harlow Platts venue is set against the stunning flatirons, making it the ideal race to bring family and friends out for that weekend picnic as they watch the action.  This course is primarily a grass lovers paradise, but we have some surprises this season, and don't forget about the never ending sand pits on the back stretch!


PRE-REGISTRATION: Available 8/1 and closes Wednesday 9/6 at 11:59pm [ADULTS: $42.50, Juniors 9-12: $25, Juniors 13-18: $30]

RACE DAY REGISTRATION: Cash only - NO Credit Cards or Checks.  Opens at 6:30am on-site and closes 40min prior to the start of your category [ADULTS: $45, Juniors 9-12: $30, Juniors 13-18: $35]

Chip Timing: This will be a chip timed event.  Please make sure to pick up your timing chip when you pick up your race number.  You'll return your timing chip right after you cross the finish line, an unreturned chip will incur a $35 replacement fee. No CHIP = relegated to last place

CYCLO-X Series Points: This race has a point rating of 1x (normal points)


“Color rush” start is designed to amplify the start-line adrenaline, align racers of the same ability and speed, and reduce lapping.
1) You will receive a newly designed and very bright color number based on your category. This will iden􀆟tify who’s in your specific category.
2) We will call up all athletes in your wave into the start grid based on USA Cycling Rankings. Then one whistle blast will send off the entire wave!
3) Results and awards will a􀆟ll be based on your unique category. For fun we will also produce a results list based off the enti􀆟re wave.


USA Cycling License Required: USAC 1-Day Beginner license: $15, only for Cat 5 Men, Cat 5 Women and Jrs. Can be purchased online at, select appropriate event, then click on Purchase One-Day License. Bring receipt to race. Annual USA Cycling licenses available online at


Venue Location: Fairview High School 1515, Greenbriar Blvd, Boulder, CO 80305.  Registration location: on north side of school.
Denver: Hwy 36 north, Exit Foothills Pkwy/Table Mesa, stay to the RT. on the exit.  Left onto Table Mesa, Left onto Broadway/93, Right onto Greenbriar Blvd. 
Boulder: S. Broadway/93, turn onto Greenbriar Blvd.
Parking: STREET PARKING ONLY, NO PARKING AT FAIRVIEW HIGH SCHOOL. Plenty of parking on Greenbriar and surrounding side streets

5 Pack information: Cost is $185 and we've overhauled the 5-pack system this season, so please continue reading.  You will receive, within one week of purchasing your 5-pack, a unique registration code.  You will then use this code to register for ANY 5 races of your choosing in the series.  This new system allows you to gift the code to friends and teammates if you choose.  Remember, just purchasing the 5-pack doesn't mean your registered for the series, you MUST use this code to register for each individual race. We are limiting the number of 5-packs to 75, so please don't delay to take advantage of these savings!  Registration for 5-packs will close on Sunday, September 3rd at 11:59pm

CYCLO-X Series Categories - 2023.PNG
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