County Line BMX Track

Located in David A. Lorenz Regional Park, County Line BMX is one of the only tracks in south metro Denver. If you love BMX racing, this is the place for you. The track is open to the public on non-race days, free of charge when weather permits. Races take place on Sundays throughout the season. All ages can participate in the sport, and everyone is welcome. So come experience the thrill of BMX racing. 

At County Line BMX, no one rides the bench.



  • Turns (3; paved)
  • Start hill (paved)
  • Pro section (second straight)
  • Bleachers
  • Picnic tables (2)


  • Camps
  • Clinics
  • Races (USA BMX sanctioned)
  • Track rentals

Other David A. Lorenz Regional Park amenities

  • Baseball/softball field
  • Disc golf course (east of park; access on Boatworks Dr)
  • Dog park (east of park; access on eastbound County Line Rd)
  • Multipurpose fields (5; synthetic turf)

Public riding

The track is open to the public on non-race days, free of charge, when weather permits. Bike helmets required.  Motorized vehicles including RC cars are NOT allowed on the track.

Please note: the gates will be locked when any part of the BMX track is too wet to ride. It can take several days of completely dry weather for the track to dry after a rain/snow. If you have any questions, or to find out if the gates are open, call 303.798.7515.


ALL ages and abilities welcome. We have riders ages 3 years and 60 years and EVERYTHING in between!

Key information

  • All ages and ability levels welcome.
  • USA BMX membership required: $1/one day; $60/annual; Can be purchased at track on race days.
  • Full face helmet, long sleeves, pants and enclosed shoes are required attire for racing.
  • Bicycle: any type and size will do, but it is recommended that you start with one that has no more than a 20" wheel diameter. Make sure all bolts are tight (especially axle and stem bolts). Remove any freestyle type axle pegs. Remove all reflectors/brackets and the kickstand.  You will eventually need a hard plastic number plate. You will be provided a temporary number plate with your membership purchase.

2017 County Line BMX Schedule

Race Points Date(s) Time Registration Fee
Sundays Single Apr 2-May 7  10-11am $10
Thursday Single May 11 5-6pm $10
Sundays  Single  May 14, 21, 28  10-11am $10 
Thursday  Single Jun 1  5-6pm $10
Olympic Day  Single Jun 4  10-11am  $0 
Bob Warnike Scholarship      Single Jun 11 10-11am $10 
Friday Single Jun 16  5-6pm $10
State Race Double Jun 17  1:30-3pm $20
Gold Cup Triple Jun 18 9:30-11am $30
Sundays Single Jul 2, 9, 16 10-11am $10
Thursday Single Jul 13  5-6pm $10
Race For Life Single Jul 23 10-11am $10
Sunday  Single Jul 30      10-11am  $10
Sundays Single Aug 13-Sep 24  10-11am $10 
Passionately Pink Single Oct 1 10-11am $10
Sunday Single Oct 8 10-11am $10
Earned Double Double Oct 15 9:30-11am      $20
Sundays Single Oct 15-
Nov 19
10-11am $10

NOTE: Always check the County Line BMX Facebook page for track closures, race cancellations, camp and special event information.

Helping out

Volunteers needed! Track maintenance and race day operations are supported with volunteers. We appreciate parents and riders who will contribute to making our track and its races great! Please consider donating your time during the race season as every bit helps.

Ways you can help:

  • Announcer
  • Fundraising
  • Registration
  • Gate Operator
  • Concessions
  • Scorers
  • Construction Work
  • Staging
  • Track Maintenance
  • Turn Official

Stay up-to-date

Two major places online to keep current with County Line BMX: Our County Line USA BMX page includes news, information about the sport, breakdown of track sections, bike and gear. Our County Line Facebook page hosts the most up to date information, race dates, cancellations and other scheduled closures.

Renting the track

Hold a birthday party or a gathering for adults and children at County Line BMX Track. Read about BMX rentals.

Connect with us

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At David A. Lorenz Regional Park
8560 S Colorado Blvd
Centennial, CO 80126

Directions (from C-470 West)

  • Exit C-470 W at University Blvd, heading North.
  • Turn Right on to County Line Rd.  
  • Turn Right on to Colorado Blvd.
  • At the first light on Colorado Blvd, turn Left into David A. Lorenz Regional Park.
  • Follow the road toward the East end of the park. The track is on the Left.


Hours of Operation
Daily 8 am - sunset, weather permitting.

For information concerning track closures due to weather conditions, check the County Line BMX Facebook page for current race information.