Last month the 32-year-old undertook a challenge known as 'Everesting', where he climbed a hill outside his old primary school in Young to the point where his total vertical ascent was the equivalent of the 8848m height of Mount Everest.

As well as being an endurance rider, MTB competitor and genuine mad man, Lamb is also a personal trainer who prepares a number of riders for competition.

Among his proteges is Sara Mills, who currently holds down fourth place in the Qantaslink Open Womens division of the series.

Mills, 18, won't be competing in Dubbo this weekend, however her first foray into the world of mountain biking has so far been a success.

"Being a successful mountain bike racer comes down to training with consistency, and for a race like this one in Dubbo, really getting your head around the fact your body needs to sustain riding for the best part of 100km over the five hours," Lamb said.

"Because Sara is only 18 years old all of her rivals have years and years more riding in their legs and it makes a difference.

"A lot of what I do with her in the studio is short, intense work that has her fit enough and fast enough for these short races but we also worked out she can't do them all.

"The work she does is so much different to what a guy like Jason English would do.

"He's a world champion and he has been known in the past to put in 40 hours a week on the bike, but most of the elite sort of riders involved in this Evocities series would be spending 15-30 hours a week on the bike, just getting the riding into their legs.

"Jason is backing up from a 12-hour event on the weekend, and he's also 10 weeks away from the 24-hour World Championships so if guys like Brendan Johnston or Shaun Lewis are there, they're training is more geared towards the shorter sprint events and while they don't have the endurance of Jason, they have the speed for long enough which is what has happened in the past two rounds of the series."

While the preparation is important for the riders, their chances of success on Sunday can also be enhanced by how well they look after themselves over the course of the race.

Nutrition and carbohydrate replacement will be essential, with competitors needing to refuel at regular intervals during the five hours.

"Depending on what kind of breakfast the elite riders have on Sunday they could possibly get through the first lap without needing to refuel, but after that they will be probably need to get some carbohydrates into their system every 15 minutes or so," Lamb said.

"That might be a gel, a sports drink or even something to eat but they will need to scout out two or three spots along the course where they can take their hands off the handlebars to get something into their mouths.

"Because the Dubbo course is about 16km and it's single track, that could be hard to do but it just adds to the challenge.

"A rider who weighs about the 70-75kg mark would look at needing to get 60-70g of carbs back into their body each hour in order to keep going."