In its second year, this event was sold out within three weeks of entries being opened, proving how keen riders are to experience some exhilarating mountain biking in the Mogo State Forest.

In the main event, riders will embark on either the Irate Intern 50km event or Angry Doctor 100km event, consisting of two different 50km loops, with the first 50km loop the same as the Irate Intern.

About 400 riders will take on the Angry Doctor, while 350 will opt for the Irate Intern.

The start will be at the Mogo carpark, and riders will head to the forest through the mining village at Old Mogo Town. Both the 50km and the 100km events finish at Mogo Oval.

With a slightly altered course from last year, returning riders will be keen to match or better their 2007 position, which should make for some interesting finishes as they battle it out.

“The course set for the Angry Doctor MTB Enduro had everything a good 100k event should, with just enough challenging hills rewarded with great single track and fast descents,” 2007 second-placed rider Shaun Lewis said.

The Angry Doctor is not for the faint hearted, as there are many climbs and not many flat areas.

If last year’s 2,850m of total climb is anything to go by, riders are in for a lot of continual ups and downs.

Accomplished Batemans Bay mountain bike rider Gavin Regan will be keeping his appointment with the Angry Doctor, and knows it won’t be an easy consultation.

“It is one of the toughest rides in Australia, with lots of up and down riding,” he said.

“Even though I ride there often, I’m under no illusions about how hard it will be.”

Regan has been training every Sunday afternoon alongside fellow Batemans Bay entrant Paul Morgan, and doing between 20 and 40km of riding three times a week to prepare for the event.

With the sheer volume of riders in the race, traffic negotiating skills will be of paramount importance.

“Everyone will have to be fully warmed up before the race, because they won’t have a chance after that,” Regan said.

Saturday will see riders enter the Nasty Nurse 11km prologue event, which is a mix of single track and fire roads which are also used in the 50km and 100km events.

Regan’s 10-year-old son Andrew will add to his family’s contribution to the race by entering the Nasty Nurse.

“Anyone can enter the Nasty Nurse, so it’s a great opportunity for those who have thought about mountain biking and want to try it,” event spokesperson Navenka Krajsek said.

Registration is at the event hub at Mogo Oval, and entries can be made on the day. There will also be demonstration bikes available so the bike-less can take part.