The slow pace of the men's 19 race played right into Oakley's hands, with the son of former world squash champion Dame Susan Devoy and her husband John Oakley calling on a withering late burst to street his rivals.
"We were pretty tightly bunched for about 6.5km but the pace was slow and Alex (Gorrie) made a move and it was all on from there. We all knew someone would kick at some stage with the slow pace, it was just a matter of who."
Oakley let Gorrie bolt but had reeled him in within 500m and controlled the final kilometre.
"The slow start really favoured me because I've got some good leg speed left from the track and always backed my chances if it came down to the last kilometre."
Katikati's Sally Gibbs (W45), fresh from three running golds at the world masters championships in the US, was in superb form in the masters women, winning the combined race with the junior women outright with an outstanding time of 17m 22s for 5000m.
Tauranga's Sid Pavett won the men's 75-79 by a massive 8 minutes, with Mt Maunganui's Fay Riley taking out the masters women 65-69 in 31m 56s.