Ontario has many associations and clubs dedicated to preserving our natural environment.  Mostly made up of volunteers, these groups are responsible for the maintenance of existing trails, and the creation of new ones.   if you're looking to meet new people or are interested in organized hikes in new areas, please check the listings below.

• Avon Trail - Organized Hikes along the 100 Km Avon trail
   
• Bruce Trail Association - Working to preserve public access to the Niagara Escarpment
   
• Cambridge Trails - develops trails in the Cambridge area
   
• Durham Outdoors Club - Activities situated around Durham region in Southern Ontario
   
• Elgin Hiking Trail Club - Manage 41 Km of trails through the Carolinian Forest
   
• Friends Of Killarney Park - Charitable organization working to enhance the interpretive, educational and recreational objectives of Killarney Park
   
• Friends of Algonquin Park - Charitable organization working to enhance the interpretive, educational and recreational objectives of Algonquin Park
   
• Ganaraska Trail Association - Maintains 500 Km of the Ganaraska Trail
   
• Grand Valley Trail Association - Manages trails alongthe Grand Valley
   
• Guelph Hiking & Trail Club - Dedicated to building & maintaining trails in the Guelph area
   
• Humber Valley Heritage Trail Association - Maintains trails along the Humber Valley
   
• Lynn Valley Trail Association - Manages an 8 Km trail between Simcoe & Port Dover
   
• Oak Ridges Trail Association - Organized hikes along the Oak Ridges Trail
   
• Outing Club of East York - Organized single day trips near Toronto
   
• Rideau Trail Association - Preserves & maintains Hiking trails between Kingston & Ottawa
   
• Sudbury Hiking Club - Organized treks in the Sudbury region
   
• Thames Valley Trail Association - Maintains over 130 Km of trails in the London Region
   
• Thunder Bay Hiking Club - Promoting recreational hiking in the Thunder Bay area
   
• Voyageur Trail Association - Managing trails in Northern Ontario
   
• Woolwich Trails Group - Over 77 Km of trails around Woolwich Township