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.


  • Course
    • 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)

County Line BMX Information

Riding at County Line BMX
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.

Racing at County Line BMX
ALL ages and abilities welcome! (We have riders ages 3 years and 60 years and EVERYTHING in between!)
USA BMX racing is a sport of youthful achievement and the American family. While the young boy or girl BMX racer develops skills at an individual pace, they are learning about winning, losing and trying again. The racer's family learns that time spent together in support of the racer and the individual achievement is quality time well spent. It is the duty of the USA BMX to establish the rules of racing that provide fair competition and fun family entertainment for all of its 70,000+ members. Visit

2016 County Line BMX Schedule

Race Points Date(s) Time Registration Fee
Sundays Single Apr 3-May 29 10-11 am $10
 Thursday Single Jun 2 5-6 pm $10
State Race Double Jun 5 9-11 am $25
Bob Warnicke Scholarship Single Jun 12 10-11 am $10
Thursday Single Jun 16 5-6 pm $10
Olympic Day Single Jun 19 10-11 am $0
Sundays Single Jun 26 - Jul 3 10-11 am $10
Thursday Single Jul 7 5-6 pm $10
Sunday Single Jul 10 - 17 10-11 am $10
Race For Life Single Jul 24 10-11 am $10
Thursday Single July 28 5-6 pm $10
Sundays Single July 31 - Aug 7 10-11 am $10
Thursday Single Aug 11 5-6 pm $10
 Sundays  Single Aug 24 - Sept 25 10-11 am $10 
Passionately Pink Single Oct 2 10-11 am $10
Earned Double Double Oct 9 9:30-11 am $20
 Sundays  Single Oct 16 - Nov 20 10-11 am` $10


NOTE: Always check BMX for tracklosures, race cancellations, camp and special event 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.
  • 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.
  • 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

Renting the BMX Track

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

Camps and Clinics

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!

Where: County Line BMX Track
When: June 6 - 9 (M-Th), 9-10:30am
Price: $69 (resident) / $75 (non-resident)

Where: County Line BMX Track
WhenJune 13-15 (M-W), 9-11am
Price$69 (resident) / $75 (non-resident)

Where: County Line BMX Track
WhenJuly 11-14 (M-Th), 9-10:30am
Price$69 (resident) / $75 (non-resident)

Where: County Line BMX Track
WhenJuly 25-28 (M-Th), 9-10:30am
Price$69 (resident) / $75 (non-resident)

Register now

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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.