The sand-based course at Kettle Park will be fast and this should favour the younger runners.
Campbell, a key member of the Hill City team that won the Ponydale relays last month, showed that he has the speed to excel on the Kettle Park course.
Smith has performed well on the track over the last two years and will also be a contender for fastest time on the four-lap senior men's course.
Clubmate Lorenz Kissling, a physical education student at the University of Otago, is another young runner with the aggressive potential to blast his way through the field. He learned his trade when he was a pupil at Mt Aspiring College and has built up a high standard of fitness.
The young guns will face a challenge from the hardened veterans in the field like Leith club runners Jason Palmer and Neale McLanachan, who have the staying power if the younger runners falter.
First over the line to win the JG Barnes Cup on handicap could be older runners like Alan Nichols (Ariki), Chris Sole (Leith), Phil Napper (Ariki) or Graham Murphy (Taieri).
The race honours the memory of Sir James Barnes, who was the Mayor of Dunedin for three terms from 1968 to 1977.
Barnes, who won the New Zealand senior men's cross-country title in 1932 and the mile in 1933, did not think there were enough races in the cross-country season and donated a cup for the race in the early 1950s.
Hannah Adamson (Hill City-University) is another young runner with the speed to gain fastest time in the three-lap women's race. Clubmate Bella Bloomfield is another contender. The challenge will come from experienced Leith runners Louisa Andrew and Mel Aitken.
Line honours in the handicap race could go to Dalise Sanderson (Ariki), Megan Balchin (Leith), Sue Cuthbert (Ariki) or Hill City runners Julia Hunt and Rose Stamm.
The races begin in front of the Dunedin Rugby Club rooms at 1.45pm (open men) and 2.20pm (open women).
Valerie Adams made it 48 consecutive wins, taking first place comfortably in the Diamond League shot put in Rome yesterday, The New Zealand Herald reported.
The best throw for the double Olympic champion came in the second round at 20.01m. Adams would have been hoping for more, but it was enough to defeat world number two Christina Schwanitz from Germany by 0.41m. Third was Lijiao Gong from China, with 19.17m.
Three of Adams' four valid throws were further that Schwanitz's best attempt, which came in round three.
Adams now has a perfect record in the 2014 Diamond Race, with eight points from two rounds. Schwanitz and Yuliya Leantsiuk, from Belarus, are second equal with two points.
The next meeting for Adams will be a World Challenge event in Marrakech, Morocco on Monday morning (NZT), followed by the New York Diamond League in New York on 14 June.
