Raheny Shamrock are aiming to defend their senior men's title at Sunday's National Road Relays, despite missing Mick Clohisey from last year's team.
Clohisey is part of a large Irish contingent running the London Marathon, also on Sunday. Raheny can still call on Kieran Kelly, Conor Dooney, and Eoin Strutt from last year's team and perhaps Kevin Dooney.
If Raheny falter, a Dundrum South Dublin team led by national 10km champion Hiko Tonosa, could take advantage. DSD can also call on John Eves, Paul O'Donnell and perhaps Killian Mooney, all strong club athletes.
Always strong are Kilkenny City Harriers, third last year with a team including Eoin Everard, Brian Maher and Thomas Hayes. Then there's Donore Harriers, with athletes of the calibre of John Travers and Eric Keogh.
DSD were runaway winners of the women's senior title last year and the trio of Fiona Clinton, Linda Byrne and Meghan Ryan could do it again.
In the competitive master races, only six seconds separated the top five teams in last year's M35 race, won by Donore Harriers, with Letterkenny, Rathfarnham WSAF, Raheny and Sligo AC the chasing teams. St Finbarr's from Cork were clear winners of the M50 title.
Class of the field in the women's W35 race was Finn Valley, led by Teresa Doherty, while Raheny Shamrock, powered by Annette Kealy, won the W50 title.
Senior men run four legs - two miles, one mile, three miles, 2 miles. Senior women and master men run three legs - one mile, then two miles and a final mile.