"Kane is a world class open water swimmer so he will definitely be tough to beat,'' said Gorman. "My money's on him to take out the race but, in saying that, on a good day I can mix it with the boys, so I'd never count myself out.''
Radford rates Gorman in high regard but remains confident of crossing the line ahead of his female counterpart.
"Mel's definitely a classy swimmer,'' he said. "She's always up there with the boys in these kinds of races, but I should be able to finish before her.''
It won't be only Gorman who will provide the challenge for Radford. The Olympic hopeful will face all of the leading Kiwis who tested him at the national championships last weekend.
Leading that challenge will be 21-year-old Australian George O'Brien, who set the open water community alight when he set a new race record on his way to winning the famed Waikiki Roughwater Challenge in Honolulu last September.
Leading the New Zealand charge is Auckland-based Jonathan Pullon, who finished strongly in Taupo to secure the second New Zealand spot to the Olympic qualifier in Portugal. Others likely to be a threat include 2011 national 10km open water winner Phillip Ryan and the 2010 national 10km title winner Casey Glover. Olympic pool aspirants Daniel Bell and Steven Kent will also spice up the talented field.
The main focus for Radford is the Olympic qualifier in June, so he is using the Capital Classic as an important part of his preparation for that. He believes the strong opposition will offer further important race practice.
"I've got a chance to get out there and swim in the open water and have a good race,'' Radford said. "You're always learning new stuff in every open water swim you do.''
Gorman, chasing her third-straight win in New Zealand this summer, is using these events in New Zealand as a competitive method of training towards her goal of a medal at the London Olympics.
"Getting in some good race practice gives you that extra little bit of confidence and a chance to fine tune your skills,'' she said. "It's really about finding the right balance between training and racing so that, come race day, you know you're 100 per cent prepared.''
She and Radford are no strangers in top open water events. They were the respective winners in last year's celebrated and lucrative Tiburon Mile in San Francisco.
The Capital Classic is not only for elite athletes, with more than 900 swimmers lining up in the various categories.
Amongst those competing with be broadcaster Kerre Woodham and a handful of Hurricanes rugby players led by former All Blacks lock Jason Eaton who will use the event as a pre-season hit out.