Erden Eruc started his human powered circumnavigation from Bodega Bay near San Francisco, California. Since then he traveled by boat, bicycle and boots around the world. Today he has 3 days left to the finish line, his start point. He is expected to arrive at the Spud Point Marina between 4 and 5 PM on Saturday, July 21st.
To claim a circumnavigation, Erden kept the following in mind:
A basic definition of a world circumnavigation is an around-the-world journey on a route which:
• begins and ends at the same location,
• travels in one general direction, and
• reaches a pair of antipodes.
So, what are antipodes?
The antipodes of any place on the Earth is the place that is diametrically opposite it, so a line drawn from the one to the other passes through the centre of the Earth and forms a true diameter. For example, the antipodes of New Zealand's lower North Island lies in Spain. Most of the Earth's land surfaces have ocean at their antipodes, this being a consequence of most land being in the land hemisphere. (Wikipedia)
More details about Erden's trip can be found HERE.