Firstly here is Wikipedia's entry for Portumna.

The Main Activities in the area are;

Fishing:

For more information on fishing in the shannon region see the website of the
Shannon Regional Fisheries Board;
Lough Derg in Irelands Shannon Region -A Fisheries Guide.



Walking:

Ther are a number of walks in the area see the links below for details;

Rinmaher Walk Portumna Forest Park

Bonaveen Walking Trail Portumna Forest Park

Cycling:

Woodland Mountain Biking Trail

Forest Friendly Family Cycling Trail

Golfing:

Here are links to some local clubs websites;

Golf Club Links

Golf Club	Website
Birr	http://www.birrgolfclub.com/
Portumna	http://www.portumnagolfclub.ie/
Nenagh	http://www.nenaghgolfclub.com/
Gort	http://www.gortgolf.com/
Galway Bay	http://www.galwaybaygolfresort.com/

For more information on golf in Ireland click here:

Golfing Union of Ireland website.

Equestrian / Horse Riding:

Horse riding in Flowerhill.

Karting:

For those of you that are more energetic you can visit the local track Pallas karting Track.

Boating:

There are a number of locations near Portumna on Lough Derg that you can hire a boat for fishing or pleasure crusing.

Emerald Star Cruisers

Shannon Castle Line Cruisers

Silver Line Cruisers

Carrickcraft Cruise Ireland

For more information on Local Attractions and historical building in the area see these websites;

History of Portumna Workhouse

 

History of Portumna Castle

Opening Times for Portumna Castle

 

Information on Portumna Bridge

Opening Times for Portumna Bridge

 

Information on Portumna Forest Park

Opening Times of Portumna Forest Park

History of the Yew Walk Portumna