My Second International Stair Race! (CN Tower Climb For Nature Race Recap) | Keep It Up, David!
Looking down the core of the CN Tower from approx. 1,000 ft : r/interestingasfuck
WWF-Canada
Toronto, Canada. 25th Apr, 2015. Participants climb the stairs during the 25th Anniversary Canada Life CN Tower Climb event in Toronto, Canada, April 25, 2015. Thousands of participants challenged the 1,776 steps
CN Tower - Wikipedia
Annual CN Tower Climb event held in Toronto - China.org.cn
14 reasons not to climb the CN Tower - WWF.CA
Stair running: A gross grind - Canadian Running Magazine