MA3K I agree with hippy. We should start a fraction earlier next month.
It would be cool to Start East, cross the river, wind down the South Thames path/basins/roads(Samuel Smith pub there) cross the river at Greenwich foot tunnel, up the Isle of Dogs (Todd), over the V and A dock/City airport (watch planes land)see the barrier then back under the river(or see if the ferry is running) to Greenwich and back to town?
Sounds good to me!