For many, a run is a jog through the park, a 5km or even possibly a marathon – but for two Devon runners, their next challenge is a little different.
Wendy Dale and Alison Little, from Braunton, are about to embark on the Jungle Ultra , a 230km (140-mile) endurance race through the Amazon rainforest in Peru.
It will take them five days and will see them battle mud, humidity, high altitude and the possibility of animal encounters along the way. It will take place in early June.
The pair are no strangers to epic adventures, having completed the Ice Ultra in the Arctic in recent months.
They both combine their exploits with full-time working. Ms Dale is a nurse and Ms Little works in the care industry.
They met when Ms Little moved to the Braunton area and was looking for a running group to join. They hit it off immediately and their running challenges have grown over time.
However, Ms Little insists the Amazon trek is going to be their toughest yet.
"It's going to be a massive adventure. We will succeed, whether we finish first or last," she said.