 He followed his Munros walk with the longest trip over the English, Irish and Welsh peaks, told in the book "Hamish’s Groats End Walk".Brown also thought up the Ultimate Challenge (now called the TGO Challenge, after The Great Outdoors Magazine, not to be confused with the Australian series, which sponsors and organises the event), a fortnight-long endurance walk from coast-to-coast across Scotland – the book "Scotland Coast To Coast" is an account of a typical Challenge walk.