Dublin is a wonderful city to visit, with its historic sites, literary bent, and wonderful pubs and restaurants. It’s also a great city for runners. Highlights include Phoenix Park, and some nice runs along the River Liffey and the canal towpaths. There is also some wonderful seaside running just north of Dublin, toward Clontarf and Howth, around Howth, and in Malahide. South of Dublin, within 1/2 hour by train or car, are lovely waterside runs in Dún Laoghaire and a fabulous path from Bray to Greystones.