Why now give it a go, but be warned, it can be addictive!

Most rowing clubs are happy for someone to turn up for a few sessions just to see if you like the sport and you could always try these people:
http://www.stratford-rowing.co.uk/index.htm

Alternatively, must gyms in the UK now have a concept 2 rowing machine. Like swimming, the corect technique takes a little practice, so get someone who knows what they are doing to show you. Also, like swimming, rowing is much kinder to your joints than running.

The rowing equivalent to a time trial is called a "head race" and they usually take place on rivers in the winter. One of the best known ones is the "Head of the River Race" over the championship course of 4 1/2 miles in London.

Have fun!
Bron