Dublin clubs dominated the Woodie's DIY Half Marathon Challenge & National Championship in Waterford, which attracted almost 700 entries from all over the country.
Sean Hehir of Rathfarnam WSAF took his first national title when he won the race in 65 minutes 24 seconds after breaking away with about five miles to go. Brian Maher of Kilkenny City Harriers beat Bantry's Alan O'Shea for second place in 66:40.
With Barry Minnock fourth and Mark Ryan eighth, Rathfarnham WSAF took team gold ahead of Clonliffe and Raheny Shamrock.
The Dublin success story continued in the women's race, when national cross-country champion Ava Hutchinson of Dundrum South Dublin made a winning half marathon debut.
Although she struggled badly over the last mile, Hutchinson crossed the line in 74:30 and, along with Hehir, is now looking forward to her marathon debut in Dublin.
Gladys Ganiel O'Neill of North Belfast was a minute behind for second with Julie Turley from Dromore third in 78:02. First master home was Clonmel's Angela McCann, fourth in 78:49.
Winning the women's team title was the Raheny trio of Eilish Kelly, Annette Kealy and Fiona Roche, with Rathfarnham second and Donore third -- another Dublin clean sweep.
Tallaght was first over-40 team, with Rathfarnham second and Mayo third. Waterford was first over-50 team
Honours were shared in the men's masters categories.
First master home was Letterkenny's Pauric McKinney, just ahead of Mick Traynor from Raheny, with the pair of them taking M45 gold and silver.
First over-40 was Clonliffe's Declan Power, while first over-50 was Gerry O'Connell of North East.
Taking the over-40 team medals was Raheny, with St Finbarr's from Cork second and Donore third. Rathfarnham was first over-50 team, beating North East Runners and Tallaght.
It meant Dublin clubs won five of the six team categories on offer.