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"We didn't dream it would be this big," Mr Cowles said. "It's blown us away."
The motorcycle rally was the Waitaki Valley Recreational and Boating Club's fourth event since March, but the club saw the motorcycle rally as having the potential to become "a landmark fundraiser" for the club each year.
The event's timing - on the second Saturday of spring - was due to the fact it was the last weekend before the Waitaki District Council-owned campground at Parsons Rock became open to the public for the camping season, but also, because there had been a three-month break after winter's Brass Monkey, in Central Otago, the Waitaki Valley Motorcycle Rally was in effect the first motorcycle rally of the season.
And with an idyllic, relatively central location, it had proven popular.
And the increased traffic - people going for rides, getting lunch - was good for the valley.
"There's bikes everywhere," he said. "What people come here for is to ride their bikes and explore new bits of the country - and it's a stunning piece of the country up here, isn't it?"