The 1,500-acre Portumna Forest Park has been transformed into a wonderful centre for outdoor recreation. There are wide open spaces, conifer and broadleaved woodland, lakeside walks, orienteering courses, a birdwatching hide, offshore islands, a ruined 15th century Abbey and a marina giving access to beautiful Lough Derg, as well as parking and toilet facilities. Trails include a 1.5km looped walking trail that is buggy and wheelchair friendly; a 2-km looped walking trail by woods and lakeshore, two ‘easy’ grade looped mountain bike trails suitable for children and the Rinmaher combined walking/cycle looped track with lake views.
Historic Portumna Castle is just next door and the whole area is within strolling distance of the town. Holidaymakers can hire bicycles for all ages at Dick's Bike Hire in Podumna Village in the heart of Portumna. They rent bikes, accessories, safety gear, child seats and pull-alongs for the baby. You can also cycle to the lovely Portumna Castle gardens, the Famine Workhouse ,the Abbey and then head to the recreational swimming area by the lake to cool off.