Ewan McGregor and actor friend Charley Boorman have completed their 20,000-mile motorcycle trip.

The duo arrived in New York yesterday after three months riding through Eastern Europe, Mongolia, Siberia and Alaska.

Their epic journey was filmed for a new TV series called 'Long Way Round', which will be shown on Sky One.

A heavily-bearded McGregor described the trip as "a good excuse to ride motorcycles for a very, very long time".

The men's diaries and the photographs they took en route will be published as a book, also titled 'Long Way Round', in November.