SwimLabs Swim School - Highlands Ranch
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Open water swimming


Grant Ranch Water Temperature: July 25, 2019 - 70 degrees

2019 Open Water Swimming

Grant Ranch will offer swimmers an opportunity to train for their upcoming events or to simply practice their open water skills. There will be two courses available,  1,000 meters for the small loop or a 1.4 mile loop. Grant Ranch is free of motorized boats, which allows for a very safe environment.

Grant Ranch Address:
7255 West Grant Ranch Boulevard
Lakewood, CO 80123

Open Water Swim Days & Times:
May 14th - September 15th

• NO SWIMMING DATES (swim meets at Grant Ranch) – June 8, 29, and July 13

Participants Must Sign This Waiver

Tuesdays, May 14 - September 10 - 6:00AM - 7:30AM
Must be out of water by 7:20 AM

Thursdays, May 16 - September 12 - 6:00AM - 7:30AM
Must be out of water by 7:20 AM

Saturdays, May 18 - September 14 - 7:30AM - 9:30AM
Must be out of water by 9:20 AM

Sundays, May 19 - September 15 - 7:30AM - 9:30AM
Must be out of water by 9:20 AM

Season Pass: $175 – BUY NOW

5-Punch Card: $55 – BUY NOW

Drop In Pass: $13 – BUY NOW

2019 Open Water Clinics

Intermediate Clinic with Anne
For Boulder IRONMAN athletes and other interested athletes

May 19 7:30 AM - 8:45 AM
June 16

Novice Clinics
7:30 AM - 8:45 AM

June 16
June 23
July 21
• August 10

Sign Up for a Clinic Here!

Participants Must Sign This Waiver

What Should You Bring?

  • - Upon arrival, please sign in with a SwimLabs Staff member with a photo ID
  • - Goggles
  • - Light Colored Cap
  • - Towel


  • There are 100 parking spots available so we highly encourage carpooling when possible. If you park in the neighborhood please RESPECT our friends in the community by keeping your voices low, observing parking signs and not blocking any driveways.


  • ID Policy: All participants must bring a photo ID to each swim. Swimmers are responsible for picking up their ID when leaving the premises. SwimLabs will keep track of punch passes through our software. If you forget your ID at Grant Ranch, it is your responsibility to come to SwimLabs Highlands Ranch to pick it up.

    Wetsuit Policy: No wetsuits allowed in the locker rooms or bathrooms. The association will provide a hose for you to rinse your wetsuit.

    Shower/Bathroom Policy: Open Water Swimmers are allowed to use the restrooms at Grant Ranch. Due to association rules, SwimLabs will need to pay for use of the showers. If you wish to use the shower, you will need to pay a $5 drop in fee or $40 annual fee. All swimmers must be off premise by 7:25 AM on Tuesdays and Thursdays and 9:25 AM Saturdays and Sundays.

    Swim times must remain within scheduled times. No swimmers will be allowed to enter the lake with less than 30 minutes remaining in posted hours. Swimming outside of posted hours will be considered trespassing and strictly prohibited.

  • 2018 Punch Cards and Passes WILL NOT transfer over to 2019. No exceptions.

  • We are a swim at your own risk lake. A limited amount of safety swim aides will be made available during each class. There will be no lifeguard on duty.

    Do not contact Grant Ranch for questions regarding water temperature, weather cancellations, etc. Please refer to our Facebook page or this web page for cancellations and updates.

    NO REFUNDS will be issued for any reason. You do not have to be a member of any specific organization (COMSA/USAT) to swim at Grant Ranch.

    No pets are allowed on the premise.

Participants Must Sign This Waiver

Questions? Email SwimLabs GrantRanchInfo@SwimLabs.com


Safer, stronger and faster swimmers start in the lab.