To get and idea for what the team are getting themselves into, take a look at the teaser for the 2012 Adidas TERREX Sting in Stirling race.
http://youtu.be/YzrIPd56Of0
More information on the event available at the event website adidas-ar.com.
Or better still, put the kettle on and watch the 50 minute TV program from the 2011 event here. Keep an eye out for Andy and Ian competing as part of Personal-FD.com.
If you want to dip your toe into the world of Adventure Racing, there are hundreds of events all across the UK, and beyond. A great way to get started is to enter a shorter event, such as the Open Adventure Series. Check out openadventure.com.