The first swimmer to complete one lap (1.9km) was Robert Huisman of Waianiwa, Southland, who completed it in about 23 minutes.
A large contingent of Wanaka Swimming Club members took part. Tane Duncan (16) was the first club member home, close behind Huisman.
On your marks
Saturday's Challenge Wanaka swim leg starts from the lakefront opposite Pembroke Park. The starting times are:
Challenge Wanaka individuals (about 240 swimmers): 6.30am
Lake Wanaka Half individuals (about 440 swimmers): 7.35am
Lake Wanaka Half teams (about 150 swimmers): 7.50amChallenge Wanaka teams (about 45 swimmers): 7.55am.