Spy: Kaimanawa girls take on the US

Amanda Wilson , Vicki Wilson and Kelly Wilson from Keeping Up With The Kaimanawas. Photo / Supplied

Northland's Wilson sisters - stars of TV One's Keeping Up with the Kaimanawas - are having the ride of their life.

While the nation tunes into the thrills and spills of the trio's taming of wild Kiwi horses, Vicki, 27, Kelly, 25, and Amanda, 22, are in the US taking part in the 100-day Extreme Mustang Makeover, one of the world's largest wild horse events. The daring adventure is seeing them "break in" horses in western states of the US.

And they're certainly not taking it easy away from the arduous challenge.

"It's illegal for girls to bull ride in New Zealand so we thought we would give it a try while we were in the wild west," Kelly said.

"We had high hopes for Amanda since she was the highest-scored female on the Mechanical Bucking Bull at Fieldays, but she only lasted 2.7 seconds! I was even worse with a time of 2.3 seconds but Vicki really impressed the cowboys with an impressive ride on the big red bull, clocking in at 7.6 seconds, just shy of the 8 seconds needed to make it a winning ride.

"I don't think they have ever seen girls attempt the bull ride at the Bryce Canyon Rodeo and apparently we made their night."

Keeping Up with the Kaimanawas follows the Wilsons on their journey to train wild Kaimanawa horses in just 150 days for the National Wild Horse Challenge.

Their talents stretch far beyond being horse trainers.

Vicki has won numerous global show-jumping titles, Kelly is into equestrian design and photography, has written two books and is producing her second TV documentary. Amanda will be a panelist on Jaquie Brown's new TV One show, Word Up.