Complex sentence: The second half of Jason's human powered circumnavigation journey continued through Southestern Asia and India before crossing the Arabian Sea to the African shores, from where he aimed north toward the Middle East and Europe, eventually returning to his starting point in England.
Split into simpler sentences: The second half of Jason's human powered circumnavigation journey is currently continuing through Southestern Asia and India. A crossing of the Arabian Sea will take Jason to the African shores, where he will aim north toward the Middle East and Europe to eventually reach his starting point back in England.