Most adventure/touring motorcyclists have heard of Austin Vince in the context of Mondo Enduro or Terra Circa. Anyway, Austin is visiting the US and will be speaking at Touratech USA in Seattle on Wednesday, March 23:
If you don’t know any of these names, I encourage a look at this page:
Basically, in 1995-1996, these Brits rode DR350s (earlier/smaller versions of the DRZ400) around the world: think Long Way Round and Long Way Down tacked together on small dual-sports. They were unable to make it across the Zilov Gap in Siberia and so went back later and did cross the Gap in the Terra Circa trip.