"I almost forget that I'm missing my leg when I'm swimming.
Ever the optimist, Margot shows no sign of losing her spirited resilience, as her goal for this event is to encourage her friends to join her and grow their own confidence.
She's an impressive character, said a greatly moved Scott Rice, the series event director.
"Margot is a real inspiration. She's living proof of the benefits of swimming."
Margot will be participating in the 3.3km I'm Going Long distance.
Other distances include the 200m OceanKids event and 300m Give it a Go event.
The other five events include the Harbour Crossing (Auckland), Capital Classic (Wellington), La Grande (Akaroa), Sand to Surf (Mt Maunganui) and King of the Bays (North Shore, Auckland).
The series runs from this month until April next year.