Tri the Rock

All you have to do is try! Tri the Rock youth

Come for a day of fun, food, prizes and sports. This annual youth triathlon is for young athletes ages five to 18. From kids who have never even heard of a triathlon to seasoned competitive triathletes, Tri the Rock encourages kids to get out and give it a try.

Event details

Sunday, Sept. 10
6:30 to 11:30 a.m.
The newly renovated
Butterfield Crossing Park and Pool

  • 6:30 a.m. bike rack opens
  • 7:30 a.m. first race begins

Registration and fees

  • $70 after June 1
  • Registration closes at midnight on Tuesday, Sept. 5

Register for the 2023 event

Packet Pickup

  • Sept. 9 and 10
    11 a.m. to 6 p.m.
  • RNK Running and Walking
    440 Fourth St.
    Castle Rock

Free informational clinic

Want to know the ins and outs of the Town’s youth triathlon? Registration is required before Friday, Sept. 1, and space is limited to 25 people per session. 

Sunday, Sept. 3

  • 1 p.m. (ages 7 to 18)
  • 1:45 p.m. (ages 5 to 6)

Register for the free clinic.

Can’t make the clinic? Please review the clinic information (PDF).

  1. 5 to 6 years old
  2. 7 to 8 & 9 to 10 years old
  3. 11 to 12 & 13 to 14 years old
  4. 15 to 18 years old

5 to 6 year old course details

  • 25-meter swim (one pool length) 
  • 1-kilometer bike ride 
  • 500-meter run

The 5- and 6-year-old age group will begin once all of the other age groups are complete (times are estimated). Please be at the race site for check-in by 10 a.m. The bike racks open at approximately 10 a.m. for all 5- and 6-year-old racers. These times are estimates and start times may be later based on the finish of the earlier racers

Thanks to all of our triathletes!