The OTCC brings together arborists & industry members in this fun, competitive event.
The OTCC is open to the public and everyone is welcome to attend: watch arborists showcase their skills, visit a tradeshow featuring our favourite vendors and anyone can try out tree climbing at the “Fun Climb” station under the guidance of a professional arborist.

Volunteer Information

Want to be part of the incredible team that makes the OTCC happen? Volunteer for the event! Meet great people, give back to the industry, have fun, and earn CEUs! Volunteer for the OTCC here!

Competitor Information

In 2025 we are adding 9 competitor spots: 54 total spots will be available: 36 men and 18 women (if 18 women are not registered, extra spots will be filled by men on the waiting list, and vice versa).

Climber registration will open on our website Monday July 07, 2025 at 7:00AM (and will close Monday July 21, 2025 at 12:00 PM). Registration is first come, first serve. Note that those seven climbers on the 2024 OTCC Masters List will have a spot reserved (but they must still register by the deadline to secure the spot). More details about registration will be announced soon.

Climbers must be present at the park for mandatory roll call, gear check and climber orientation at all of the following times: Thursday 4:00PM, Friday 8:00AM and Saturday 8:00AM (make sure you're there on time! If you're not there when we call your name, you'll lose your chance to compete and we don't want that!) More details about the schedule will be released soon.
At the start of the event we will announce the number of climbers who will compete in the 2025 Masters (the number depends on the number of male and female climbers competing in each division – as per  ITCC rule 8.2.4)

See ISA’s information on: Gear inspection; Gear check video; Current ITCC Rules; and Equipment Specifications including approved mechanical devices

Non-Ontario Competitors

For the 2025 OTCC: non-Ontario residents will be offered spots after Ontario climbers. We have updated this for 2025 due to the high number of Ontario climbers on the waitlist.
Non-Ontario residents can compete in preliminary events but cannot compete in the Masters.
All OTCC competitors must be members of ISA Ontario in good standing at the time of registration.

Ascent Event – Ontario Record Attempt

We will hold an Ascent Event Ontario record attempt at the 2025 OTCC. (We won’t be holding a world record attempt at the 2025 OTCC, but may hold it in the future). How will the Ascent Ontario Record Attempt work? The top 3 males and top 3 females from the 2025 OTCC preliminary Ascent Event will be offered the option to attempt. Each climber will have one attempt only. Only those 6 climbers will be offered the opportunity. The Attempt will be held after preliminaries, before the Masters on Saturday. See the current record times below.

OTCC Committee Chair:

Ken Gillies
gilliestreecare@mac.com

Head Judge:

Jess van Vliet
peartjessica@hotmail.com 

Head Tech:

Peter de Vries
info@isaontario.com

Virtual Forums: We've hosted virtual forums to discuss the event – thank you to everyone who participated: your input helps continue to make the OTCC better and better!

• May 17 2023 Virtual Forum: Watch the recording here
• Nov 15 2023 Virtual Forum: Watch the recording here
  
• June 18 2024 Virtual Forum: Watch the recording here

Ontario’s Ascent Event Records were established at the 2024 OTCC:
Serena Soucy – Ontario Women’s Ascent record: 17.87 seconds
Chris Sallows – Ontario Men’s Ascent record: 8.80 seconds

Is your municipality interested in hosting an OTCC?
The OTCC event is a great way to showcase your municipality, your local park, and to bring the community together for an incredible event! See requirements to host an OTCC event here. And contact us for more information