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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 was completely redesigned in January 2020. The track is closed to the public on non-race days. 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.


Learn about our new BMX Racing League for riders of all ages!

Public Riding

County Line BMX is not open to the public outside of scheduled programming. We have gate practice on Thursday, youth camps Mondays and Tuesdays, and racing on Sundays. 



  • Turns (3; paved)
  • Start hill (paved)
  • Bleachers
  • Picnic tables (2)


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

Other David A. Lorenz Regional Park amenities

  • Baseball/softball field
  • Multipurpose fields (5; synthetic turf)

Gate Practice

Weather permitting, we have gate practice every Thursday during the BMX season (April-October), from 5:00pm-7:00pm. This is open to the public and the cost is $5 per practice, bike helmets are required.

Racing & Track Schedule

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.
2024 County Line BMX Schedule

This schedule is subject to change.



Race Points Date(s) Time Registration Fee
Local Race Single Single Sunday's
April 7 - May 19   
Registration: 10:00am  $12.00  


Bob Warnicke Scholarship Race
Single June 2 Registration: 10:00am $12.00
Race for Life Single June 9


Registration: 10:00am $12.00
Local Race Single Single July 16 Registration: 10:00am $12.00
State Race Double Double July 7 Registration: 9:00am $30.00
Local Race Single Single

July 14 - November 10


Registration: 10:00am $12.00

NO RACES AT COUNTY LINE BMX THE FOLLOWING DAYS: April 21, May 26, June 23, June 30, July 28th, September 15. 

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


Special Facilities Coordinator
Gabrielle Schott



Rainout Line Number

303-219-1150 ext. 14

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
Only open for scheduled programming. 

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

Connect With Us
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Strider Camps

Discover your biking skills in these fun and exciting camps! Camps will build a solid foundation for beginners, increasing their confidence and technical skills. Boys and girls welcome! The Strider Camps are specialized for ages 2-8 and introduces the fundamental skills of riding a bike.

Strider Camps

BMX Champ Camps

Discover your BMX skills in these fun and exciting camps! Camps will build a solid foundation for beginners, increasing their confidence and technical skills. Boys and girls welcome! The BMX Champ Camps are designed for ages 5 - 12.

BMX Champ Camps

Renting the track

Hold a birthday party or a gathering for adults and children at County Line BMX Track. Reserve your space now!

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.

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