The main loop of Macnamara Nature Trail takes you for 4kms with an additional 500m if you want to walk out to the marsh lookout. There’s also a newer 1.5km northern loop which means you can make this a 4km or 6+ km hike if you’d like! This trail is rich in flora and fauna, on the winter day that I wandered around there were plenty of chickadees, nuthatches, and woodpeckers to view. Points of interest on the Macnamara Nature Trail include: Lime Kiln, Lady Slipper Orchids (early summer), boardwalks, forestlands and marshlands, streams, lookout area over the Ottawa River