And what is more difficult than riding 120km through the unknown East Otago countryside, more than 1000km away from her home in Taranaki?
The 11-year-old was unafraid as she prepared for the National Endurance and Competitive Trail Ride Championships this weekend, in Nenthorn Valley, Macraes Flat.
She is no stranger to the endurance circuit, having won the North Island Endurance Championships 100km earlier this year, but tomorrow would be her first time taking on the 120km event.
It will also be her first time riding in the South Island, but she was confident in her, and her horse Moondance’s, ability.
"It’s a step up from the 100km.
"I enjoy the longer rides. They have more things to do and see," Isla said.
The secret to her success was simple — she never put pressure on Moondance.
"I just take my time."
At the 2019 national event, Isla won the 60km event, while her mother, Pip, won the pinnacle 160km endurance event the same year.
Isla credited her success in the sport to her mother, and wanted to follow in her footsteps with the 160km event one day.
National organising committee president Rachel Stocks was pleased about 100 riders had entered in various events on the three days.
"We’re absolutely delighted that there are so many riders from the North Island," Stocks said.
"It’s great, and to get 15 people entered in the 160km — it’s really good."
