I know this is a forum for running but yesterday I participated in the Swimathon which raised money for Marie Curie. I only did the shortest distance - 1.5km (which is 60 lengths of a 25m pool) but it was a great experience. I swim a couple of times a week as well as running and I find the combination has improved my overall fitness. Swimming is a bit easier on the joints - which seems to be more & more important to me having turned 49 on Friday! I'm hoping to do the Swimathon next year at the 2.5km distance & I went to do it at the Olympic pool. Anyone who is a regular swimmer or wants something to aim for which goes well with running should maybe consider giving this a go. I've tried to add a picture of the medal but for some reason it won't let me.