Rotorua teenager David Boles has proven he is an ocean swimmer of high potential as he added the Generation Homes Sand to Surf title to his growing list of credentials.

Boles, 17, a Year 13 student at John Paul College, blitzed the field in perfect conditions at Mount Maunganui yesterday morning. He won the 2.61km swim around Rabbit Island and Moturiki Island with a spectacular finish at Mount Main Beach in a time of 29m 34s.

Luke Kelly (30.34) finished second and Luke Mitchell third (30.39) in a tight finish.

Boles, who finished third and fifth in the past two years, follows in the footsteps of esteemed former winners in Rotorua's Kane Radford, Tauranga's Nathan Capp and veteran Brent Foster, who finished fifth on Saturday.

Last month Boles won The Legend of the Lake race held on the Blue Lake in his home town.

He says he felt confident at the start line on Saturday.

"I was definitely feeling hopeful especially after the Blue Lake win and I just went out and tried to give it my best shot. The biggest challenge with these types of races is just trying to get to the front of the race and the added challenge of the waves," Boles said.

"The event was well planned and kept us away from the rocks and there was not any jellyfish. It was a safe swim."

The women's event had been dominated by Charlotte Webby, who had three consecutive victories to her name. But she was not part of this year's race which meant a first Sand to Surf win for Dunedin swimmer Stefannie Gillespie (31.36), from Greerton Swim Club's Mia Pugh (33.00), with Hannah Blackwood third (33.04).

Gillespie was also a last up winner in Rotorua and also won the Harbour Crossing event in Auckland that opened the series in November.