ISAO is calling for all climbers who are interested in competing in our 26th Annual Ontario Tree Climbing Championship to register beginning 14 July 7am.  Registration is based on a "1st come, 1st served basis" to the 1st 25 Men and 1st 10 women.  If 10 women are not registered by 4 August (closing date), than the remaining spots will be filled by men on the waiting list.

Please click here to download our registration form.

Our mission is to enhance and promote the care and benefit of trees for present and future generations in Ontario through education, research and awareness.