In March 2012, I left my home in Gloucestershire, UK, to cycle around the world. I have no idea how long this will take ...

How fast do you go on average?

In reasonable cycling conditions I like to sit at about 20km/h (12mph).  Up hills or against the wind that can fall to below 6km/h.  With a streaming tailwind that can rise to over 30km/h.  Again, it all depends on the conditions.