Hi Tina,
Walking and Hiking is a very popular activity here on the island of Ireland!
September is a wonderful time to visit, a little quieter than the main seasons but still warm and the days are still long enough to enjoy all there is to see and do.
Public transport between the major towns and cities will be a perfect way to visit the different locations of Dublin, Cork, Killarney, and Galway. There is a super article on
10 Day trips from Dublin, many use public transport to get the different places such as
Glendalough, Blessington Lakes, Howth, and
Powerscourt House and Gardens to name but a few.
Cork, Killarney, and Galway all have walking routes near the centres.
Irish trails have a super website where you can find both linear and circular walks to keep you busy.
There are
tour operators who can offer day trips and self-guided walking holidays which allow for linear walks and onward accommodation so you can move along without the worries of luggage and getting back to where you started.
Wonderful Ireland Walking Holidays would be one such operator if you fancied this as an option.
We also have other community posts regarding
walking holidays. Please feel free to have a look and see if there is some useful information there too.
I hope this gives you lots of inspiration, and I'm sure your fellow members and some industry partners will be able to add to this list!
If you need any more help, just let me know!
Martin