Killarney Lake is the heart of the community and is the focus for many of the activities throughout the year. Located on the edge of town, it is a popular resort attracting thousands of vacationers to cottages and campgrounds every summer.
Swimming and fishing facilities are located in Erin Park on the east shore of the lake. A well-maintained change house with showers is available at the designated swimming area. Lifeguards are on duty throughout the season and instructors offer a complete swimming lesson program. In the summer children of all ages can participate in the lakeshore day camp run by the recreation commission.

Just up from the sandy beach is Erin Park, a great place to gather together under a shady oak for a picnic where there's plenty of playground equipment and exploring opportunities to keep the kids entertained. If you’re looking for a quiet spot to enjoy the view, Killarney’s new Centennial Park located along the lake’s bay is a terrific location to watch the pelicans in season or enjoy the brilliant shades of turning leaves in the fall.

Killarney Lake is a popular destination for campers. Kerry Park, located on the north side of the lake, boasts more than 100 serviced sites, boat launching and docking facilities with showers and washrooms. A short walk across the street from the main beach is the Killarney Agricultural Campgrounds, a great spot for those who want to camp close to the beach. Killarney Lake is the centre of attention all year long. In the winter months it is a popular attraction for ice fishing and skating.

Just 30 km from Killarney, The Turtle Mountain Provincial Park offers a wealth of summer and winter outdoor activities including a toboggan run, outdoor skating rinks, hiking trails, swimming areas, camping and miles of groomed cross country ski trails.