I had read on another blog that you could walk out to Poolbeg Lighthouse and from looking at the map I didnt think it would be a very pretty walk as it appeared to be through an industrial estate along Pigeon House Road, but one very windy and cold day we decided to give it a go. My partner had already planned a nicer route and the walk itself was such a great way of getting out of Dublin for some fresh air.
We left from Grand Canal and walked east to Ringsend Park, then we went down Beach Road heading towards the sea. From there there is a path that follows the beach around to Irishtown Park and then after the car park you turn right onto the start of the Pier walk and continue stright down South Wall to Poolbeg Lighthouse.
The route is about 8 miles in total and it can be enjoyed in all weathers.