Running - argghhh!!

Well I am trying to take up running! I have been persuaded to do a triathlon on May 7th! 500m swim, 14km bike ride, 7km run. Not bad distances I hear you say but I am just not cut out to run! Don't get me wrong 20 years ago I ran 2 marathons and belonged to a club but I now resemble a lumbering red faced sweaty gorilla! Swimming has changed my body shape and my lower half just dosn't work like it used to! I cycled 21 miles at the weekend and it was relatively easy but to don a pair of running shoes and put one foot in front of each other shouldn't be too difficult - but no! Looks like I have a lot of work ahead of me! Watch this space!