Is having your EC's centered around a sport bad?

<p>So I'm a rising senior and I really want to go to Duke. Or Columbia.
Almost all of my EC's are centered around swimming and I've heard different things about whether this is bad or good?
I'm going to be co-captain of my varsity team this year and I've swam on varsity all 4 years. I also swim for a US club team (this isn't as fancy as it sounds) in the winter and summer. This will be my 3rd year. I'm quite good and I was the only All-Scholastic for the sport at my school junior year. (This means I kept a good GPA while helping lead my team to victories and all that.)
Most of my volunteering jobs have to do with swimming also, like I volunteer at the Special Olympics in the summer and do this thing for swimmers that raises money for cancer research with my team.
In the summer, I have a job as a lifeguard at the local pool and teach swim lessons there too.
My only other EC's are that I'm a member of the Water Polo Club (we don't compete) and I'm president of the Enviromental Club.
So yeah, thanks to anyone who read through all that. Is this good or bad?</p>

<p>It’s good if you can become a swim recruit.</p>

<p>Personally, I think that it sounds impressive. I can tell that you are very dedicated to swimming. It seems better than being in a million clubs that don’t really do anything.</p>

<p>Oh yeah, by the way, I don’t think I’m good enough to be recruited.</p>

<p>It’s certainly valuable to be so singularly involved, but it’s difficult to ascertain exactly what a non-recruitable athlete brings to the campus, at least when compared to kids whose academic/extracurricular interests are more immediately applicable to campus life. </p>

<p>Consider applying ED to one of these schools if you’re dead-set on attending (and have scores whereabouts of the 75th percentile).</p>