Angrignon Park has wonderful walking trails through woods and around ponds. It's nearby a metro stop. Can also combine with the paved trail along the Aqueduct Canal, and even the Lachine Rapids paths.
Wonderful running options on this island that sits between the city of Montreal and the South Shore. 10+ km of waterfront park paths on the island, a lovely path to Verdun, the Ice Control Structure path, and connections to the Champlain Bridge.
Some 25 km of multi-use paths celebrating the St. Lawrence River. Run over the Champlain Bridge on a new pedestrian path. The 'Ice Control' & Petite Voie du Fleuve bike paths run literally on the river, with great views of the water and Montreal skyline.
Wonderful running options in Longeuil, on Montreal's south shore. The Promenade René-Lévesque is a paved 7 km path along the St. Lawrence River. Îles-de-Boucherville National Park has 30+ km of trails connecting five islands.
Lakeshore Drive goes for 25+ km along the St. Lawrence River from Lachine to Sainte-Anne-de-Bellevue. Many sections have lovely water views and attractive homes. We've mapped the entire route, with recommended sections.
Some nice, large parks for running on Montreal's West Island. The centerpiece is Centennial Park, which features ~3 km of paths. 2 km east of there is Bois-de-Liesse Nature Park, which has 5+ km of wooded nature trails. Combine the two for a ~15k!