The Chain Reaction Cycles MTB Marathon Series guidebook has gone digital in 2012, full of information to help you tackle any of the five rounds in the series.

"Every year since our humble beginnings in 2000 we have tried to create exciting mountain bike marathons and 2012 is looking to be another great year for the UK mountain bike marathon scene," they told us.

"Besides adding an extra sportive to the Vitus Road Sportives powered by CycleOps Power, which brings the series up to four events in three different countries, adding the new location of Abergavenny to the CRC MTB Marathon Series powered by Mercedes-Benz Vito Sport, running the UK Marathon Champs in Selkirk and tackling our first ever triple event at the series finale in Ruthin, we also have given our guidebook (FOC) a complete once over."

The revamped guidebook includes a review of last year's events, tips on how to tackle a mountain bike marathon, information on bike choice and kit, as well as a full rundown of what in store for this year's series, which kicked off over the Easter weekend in Builth Wells.

To read the 2012 guidebook, head to and click on the magazine cover in the right hand column.