The Coronation Walk runs south along the River Suir from Cahir Castle to the Swiss Cottage. It is about two kilometres each way, so four kilometres there and back, and it is flat, surfaced and shaded almost the whole way. If you only do one thing in Cahir on foot, do this.
The route
It starts at the castle in the middle of the town, which makes it unusually easy to fit in: there is no drive to a trailhead and no hunting for a car park. The path follows the river the whole way, with benches at intervals, and finishes at the Swiss Cottage.
There is no loop. You walk down and you walk back, and the walk back looks different enough that this is not a hardship.
What you walk through
The woodland along the river is broadleaf and old. Much of it went in from the 1790s onwards as part of the Cahir estate and has matured into beech, oak, sycamore and Spanish chestnut, with laurel and rhododendron underneath. Somebody planned all of it. That is why it feels the way it does.
There are swans and ducks on the river the whole year. Red squirrel, pheasant and woodcock are all present in the woods, and the squirrels are the ones people actually see, usually by hearing something above them first.
How long to allow
An hour and a half covers the round trip at a walking pace with stops. Add the time for the Swiss Cottage tour at the far end, which is the usual reason to go, and you have a comfortable half day.
Underfoot and access
The path is flat and even, with no stiles and no climbing. It suits most people who can manage a couple of kilometres, and it is generally fine with a buggy, though after heavy rain the surface can be soft in places. There is no shelter to speak of if the weather turns, so take a coat rather than gamble.
The other end
The Swiss Cottage can only be seen by guided tour and it is an Office of Public Works site, so check the Heritage Ireland page for the season and times before you set out. Turning up at the door and finding it shut turns a good walk into a long one.
Doing it as a day
The obvious shape of a day in Cahir is the castle in the morning, this walk in the middle, the cottage at the far end, and something to eat back in the town afterwards. Cafes in Cahir covers the coffee end and the best places to eat in Cahir the rest.
If you want more walking
This stretch is also the short walkable section of the Suir Blueway, which otherwise runs from Cahir as a paddling trail rather than a path. Walking near Cahir covers the woodland loops at Scaragh and the Galtee routes for anyone wanting a harder day, and cycling routes near Cahir covers the bike.