"We were having a lot of fun but had to get back to do some more work, so we didn't end up watching all the races."
To win the TAB promotion, Mr Taylor, a health and safety specialist, and Ms Webb, a nurse, had to pick the three winning horses in any order for three legs of three designated races.
On Saturday those races were leg one of race eight, leg two of race nine and leg three of race 10.
The next day, after some more gardening, they went and checked their ticket at the same bar and were told that they had won and to take it to a nearby TAB on DominionRd.
"We had a bit of a hug in the car and then took it up the road," Mr Taylor said.
"She put it through the machine and it was just, phwoar, it blew both Sharon and my minds."
He said the windfall meant they did not need to use a recently approved loan to renovate their house and would have a much easier time planning a trip to Europe for the Rugby World Cup next year.
"What we did we didn't think would or could be so life-changing. It was unbelievable."
The second-biggest prize from Saturday's gambling promotion was $147,294.90 from a $64 bet in Christchurch and another winner took home $73,421.40 from an $8 bet.
Another Triple Trio with a guaranteed $500,000 pool will be run on Diamond Day at Ellerslie racecourse tomorrow.