At Bleasdell Boulder Conservation Area Trail, you can take a journey through time with a short hike to the ‘Bleasdell Boulder’, one of the largest known glacial erratics in North America, estimated to be 2.3 billion years old. The Bleasdell Boulder, also known as the Glen Miller Rock, was studied by Reverend William Bleasdell in the 1800s who wrote of the rock in scientific journals and so brought it to the attention of geologists across Canada. The Boulder measures 13.4 metres long, 7.3 metres wide and 6.7 metres high (44 x 24 x22 ). That s over two stories tall!

Apart from the Bleasdell Boulder, you will see a wide variety of trees, flowers, and ferns. You may find beaver activity, rabbits, hare, weasels, raccoons, fox, deer, squirrels, chipmunks, grouse, hawks, waterfowl, songbirds, reptiles and amphibians.

Lower Trent Conservation welcomes hiking, birding, and fishing enthusiasts and is always welcome to families. The exceptionally well maintained trails can be accessed from the parking lot. A .6 km link trail connects to the Lower Trent Trail, a 17 km non-motorized trail along the former rail bed between Trenton and Glen Ross.

2oldguyswalking website has a great review (posted 2017) with images. Go here to read this review.

Bleasdell Boulder Conservation Area Trail is just one of the many nature trails and hiking trails you can find throughout Ontario by using the search features of

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Bleasdell Boulder Conservation Area Trail characteristics

Length: 1.5 km. loop trail with .6 kilometre link to Lower Trent Trail
Difficulty: Easy (Trail classifications)
Trail surface: Natural and Stone Dust
Trail use: Hiking, Cross-country skiing, Snowshoeing, and Mountain biking
Accessibility Notes: Not wheelchair accessible.
Fees: None

Flora & Fauna:

Not reported yet

Amenities: portable washroom

Attractions: Glacial erratic

Lower Trent Conservation Authority Phone: 613-394-4829

Find it: Take Highway 33, north from Highway 401, toward Glen Miller. Area is located just before Glen Miller Bridge.

GPS Coordinates (main trailhead):
Latitude: 44.1469000
Longitude: -77.5848000