About Us

WE OFFER THE HIGHEST QUALITY OUTDOOR ROCK CLIMBING COURSES IN ONTARIO

It's the On the Rocks mission to help climbers of all ages, skill levels, and abilities learn how to safely and confidently enjoy all styles of rock climbing, while having an awesome time. Leslie Timms, Founder and Head Guide, is a fully accredited PCGI Lead Guide and approved PCGI Mentor, as well as an accomplished professional rock climber. On the Rocks is a team of passionate rock climbers and certified guides, keen to share years of experience with those keen to learn.


Safety is always our #1 priority and that is why On the Rocks strictly hires Certified Guides, teaching the most current and efficient rock climbing techniques available.

Good times On the Rocks! 

LOCATION, LOCATION,LOCATION

  We were founded in Thornbury, Ontario and our team of certified Single Pitch Guides is proud to offer guided adventures and courses at Rattlesnake Point and the Beaver Valley crags (Metcalfe Rock, The Swamp, etc).

We are open from May 1st through October, but we can squeak in some earlier/latertrips and courses if weather permits. 

Please do not hesitate to inquire about custom locations/courses!

Leslie Timms

Lead Guide 

Certified PCGI Lead Guide 
Approved PCGI SPG Course Provider/Examiner
PCGI Multi-Pitch Guide Course 
Wilderness First Responder

Algonquin Outdoor Adventure Program Graduate

 

Outdoor Climbing Accomplishments:

Redpointed sport routes up to 5.13d

Onsighted sport routes up to 5.13b

Redpointed traditional routes up to 5.13b

Onsighted traditional routes up to 5.12a

Bouldered up to V10
 

First Ascents: Above the Clouds 5.13b (mixed), Stratus Fear 5.12d (trad), Arrested Development 5.13a (sport), Cottage Crack 5.12 (trad mix), Shark Week 5.12+ (sport), Ripple Effect 5.12c (sport), Whoopee Cushion 5.12c (sport), Fortune Teller 5.12b, Black Finch 5.12 (sport), Fear of Commitment 5.12 (sport), Stihl Your Face 5.12 (sport), Weekday Warrior 5.11a (sport), Decade 5.11a (sport).



 



 

Leslie has been an aspiring guide and adventurer for most of her life. Her passion for epic adventures started with a love for canoe tripping after months of summer outdoor education training in high school. She was then accepted into the Outdoor Adventure Program at Algonquin College, one of the top outdoor education programs in Canada.



During her years at college she discovered rock climbing and after graduating at the top of her class, Leslie hit the road to begin her career as a climber. Leslie has since climbed difficult boulders, sport routes and traditional cracks all over the world. She has developed new routes on the Niagara Escarpment, and given back through countless hours of climbing access, education, community initiatives.

 

After falling in love with the Beaver Valley on a climbing trip after college, Leslie moved to Thornbury, Ontario to be close to the rocks. She has since established and climbed several difficult traditional and sport routes in Ontario, including the First Ascent of Above the Clouds 5.13 trad/mix at Lions Head.

 

Leslie is a certified PCGI Lead Guide with Professional Climbing Guide Institute and also an approved PCGI Mentor, approved to certify other PCGI Guides across Canada and the US. She has guided and taught rock clinics all over North America, and at festivals like the Arc'teryx Climbing Academy in Squamish and Red Rock Rendezvous in Las Vegas. On the Rocks is Leslie's vision of collaborating with other passionate certified guides to provide the absolute best climbing courses and experiences on the Niagara Escarpment. 

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Will
Gilbert

Climbing Guide

Certified PCGI Single Pitch Guide

Wilderness First Responder

 

I started rock climbing more than 12 years ago on the Niagara Escarpment, and since that time I've travelled to climb every year, visiting many areas in North America, as well as Japan and recently Europe. My favourite climbing area is Red Rock Canyon outside Las Vegas, for the scenic beauty and variety. While I started climbing using traditional protection and climbing mostly cracks, I love all the different types of climbing, from bouldering to sport to multi-pitch trad, and even ice climbing and alpinism. The focus and excitement in climbing is something special, and something I love to share. It makes me happy to see someone I've introduced to the sport or taught achieve their goals and get excited to climb! I look forward to getting out and climbing with you!

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Adam
Mitchell

Climbing Guide

Certified PCGI Single Pitch Guide

I was introduced to climbing in my early teens and have been on ropes ever since. From climbing rock and ice to trees as an arborist, I feel at home in the vertical world, and enjoy all aspects of climbing.

In addition to climbing, I have many outdoor interests, from canoe tripping and biking in the summer to backcountry skiing and touring in the winter.

I am dedicated to working with both new and experienced climbers alike, passing on my knowledge and experience so they too can enjoy climbing and accomplish their goals safely.

Kate
Stewart

Climbing Guide

Certified PCGI Single Pitch Guide

Sport, trad, boulder, scramble...even flail, Kate enjoys all aspects of climbing and thrives on the community it builds. She is always excited to share her stoke through guiding and looks forward to meeting YOU on the wall!

In addition to her role as a Climbing Guide, Kate is an Executive Director for the Canadian Adaptive Climbing Society where she uses her skills to make climbing accessible for individual living with physical barriers in Ontario. Kate has been facilitating this role both indoors and outdoors since 2017.

Kate discovered climbing through friends in school, and has since maintained a student mentality with the belief that there is always more to learn. She loves discovering new climbing areas on her travels and is always looking for more adventures. Within Canada, Kate has explored Ontario climbing as far north as Thunder Bay, and loves BC climbing from Squamish to the Island mountains. Kate has also visited a variety of US destination from New Hampshire to Yosemite, and raves about climbing overseas in Croatia.

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SOCIAL PROOF

NOT SURE WE'RE THE CLIMBING GUIDES FOR YOU? DON'T TAKE IT FROM US. CHECK OUT WHAT SOME OF OUR PAST CLIMBERS HAVE TO SAY. 

CONTACT
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PHONE

(647)879-0812

EMAIL

info@ontherocksclimbing.com 
 

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