Organisers of the iconic Birdsville Races in far south-west Queensland says they have seen record crowd numbers over the weekend.

Birdsville's population swelled from 100 to about 7,000 people for the two-day meeting.

Race club president David Brook says warm and dry weather made for ideal conditions.

"There was a very big crowd - a lot more campers this year, people coming early," he said.

"It was a good day's racing - the weather was fine, probably a couple of degrees hotter than we would have liked, but still it wasn't all that hot at about 32, 33 degrees [Celsius]."

The winner of the coveted Birdsville Cup, Primed, was trained by Barcaldine-based Todd Austin.

He says it is the first time he has won the cup at the famous race meeting.

"It all went to plan - I just asked the 'Jock' to give him a box feed run and a good alley and he did, which was a very well-timed ride," he said.

"I've had him for three starts. He won the Muttaburra Cup and then he finished down the track at Charleville the other day and that's his third run for me."