Chattahoochee Challenge Half/Duathlon at Callaway Gardens!

Welcome to the Chattahoochee Challenge! We are excited to bring you our biggest and best half triathlon and duathlon yet.  Join us at our new location at Callaway Gardens for a lake swim and a beautiful bike and run course.  See you soon!

Event details and schedule

We hope you are getting excited!  We are looking forward to a great race.  To keep you updated on the race events you will find some race information below. If you have any questions or concerns please feel free to contact us at either 8084787576 or on Facebook at

Start Time:
We will be starting the race at 7:30am.


Parking for the event is located in large parking lot adjacent to Robin Lake.  

Important Points:

You will find all the important points for the weekend on this map (transition, parking, finish line, Friday packet pick up)

Packet Pick Up:
Will be in the Circus tent located at Robin Lake Beach on Friday evening from 4-7pm and on Saturday morning from 6-7am.

All athletes MUST bring all of the following to Packet Pick Up:
1. Government issue valid photo ID
2. Valid USAT card (if a member)

USAT Rules and Regulations:
The TriColumbusGA Chattahoochee Challenge Race Series is sanctioned by USA Triathlon. This will mean that all participants will need to be either an annual member of USAT or procure a one-day membership and sign a waiver. One day memberships for 2018 are $15 which can be purchased during registration.


The water temperature is typically 62-64 degrees. The race will be wetsuit legal.  If you need a wetsuit, we recommend discount code c-multi.

Swim Waves:

Athletes will start the swim portion of the race from the beach at the swim start. Swim Waves are tentatively as follows:

730am- Men

733am -Women

Pre Swim and Wetsuits:
The swim will be wetsuit legal. Water temperatures will be in the mid 60s. Xterra Wetsuits has granted a discount code of C-MULTI. This will provide a discount of 50-60%.

Transition Area is located in the main parking lot at Robin Lake

Swim Course:

Athletes will swim in a clockwise direction, keeping buoys on their right.  The swim course will be a 2 loop course. This flow of traffic is for your safety.

Lifeguards will help keep athletes on course.  Please listen to their instructions.
Should you need assistance for any reason, please let the lifeguards know.  They will be located on the bank as well as in kayaks along the course.

Bike Course: Courses will be posted shortly.

There will be a USAT official on the course to enforce USAT Rules and Regulations.

Run Course:

There will be nutrition/hydration opportunities approximately every mile. Nutritional options include, but are not limited sports drink, water, gels, coke, pretzels, chips, cookies, fruit, etc. Restrooms will be located in transition/aid station 1 and the aid stations located on the run course approximately every 2-3 miles.
The run course is a flat 2-loop course. Aid stations are located approx every 1 mile. Should family and friends wish to send their athlete a motivational message there will be sidewalk chalk available at each aid station.

Cut Off Times:
Swim: 1 hour and 10 minutes after final wave start
Bike: 5 hours and 30 minutes after final wave start
Run: 8 hours and 30 minutes after final wave start

Packet Pick up at the circus tent located at Robin Lake
5:30am Transition Opens/Race day registration/Packet Pick up
7:10am Transition Closes
7:15am Pre race Brief at swim start
7:27am National Anthem
7:29am Cannon Fires
7:30am Race Starts
9:00am Swim Course Closes
1:30pm Bike Course Closes
Approx 2pm Awards Ceremony (official time will be announced throughout the day)
4:30pm Race Course Closes

Bike Check In:
Bikes will be checked in race morning only.

Bike: Aid Stations at mile 15, 30 and 40, water, and sports drink
Run: Aid Station approx. every mile -water, sports drink and gels, coke, cookies, chips, fruit, etc


In the event of inclement weather…There are no “rain dates” for TriColumbusGA events. If the weather conditions are hazardous, Race Management has the right to change, eliminate parts of the course, or delay up to a point. However, if it is deemed to dangerous to race, the event will be canceled and there will be no refunds. Of course, since we are athletes ourselves, we will do everything in our power to have the event, but your safety is of our utmost concern.

If you would like to volunteer please contact with availability and Volunteer in the subject line.

Please follow us on Facebook at for updated information as it comes. If you have any questions or concerns please email

On behalf of the Callaway Gardens and TriColumbusGA, we welcome you to our event. We look forward to seeing you April 21!

Chattahoochee Challenge Half/Duathlon