Incredibly, Wilson dislocated her shoulder in an early round of the event, but was still able to overcome a top-flight field and take out the $NZ142,000 six-figure winner's purse, which she says will help bring her chosen horse, named Kentucky, home to New Zealand.
She was the first New Zealander to be selected to compete in the event, and the first English-style trainer, as opposed to western style cowgirls.
The Road to the Horse competition is one of the most coveted titles in the horse industry, regarded as the equivalent to Badminton in the eventing world or the US Open in golf.
Inclusion is by invitation only.
Wilson beat the most credentialed other competitors of American trio Sarah Dawson, Kate Neubert and Rachelle Valentine.
Keeping up with the Kaimanawas was the first or second most-watched evening show across all channels for the entire eight-part series, when it aired on TV One, securing more than 450,000 viewers each week.