Great Russian River Race!

Last years winner did 15 miles of river in 1:37.



http://www.greatrussianriverrace.com/

Last years winner did 15 miles of river in 1:37.
http://www.greatrussianriverrace.com/

Nice!
Its similar to the Eppie's Great Race on the American except that's a Triathlon with the biking and running as well.

So the question I have is what are these two guys doing..... pushing and paddling.