I belong to a team named AROUND THE WORLD SWIMMING CHALLENGE and we're currently launching a couple of challenges. We've set up one for advance swimmers and another for starters to intermediate swimmers. What we do is set up a goal like swimming across famous rivers and channels around the world and count our daily swimming as miles.
Right now we have the English Channel Challenge (advanced) which is equal to a 42 miles swim and the Amazon River Challenge (starters/intermediate) equal to a 24 miles swim.
We also have a tread (called Q&A) for technical questions and we post various routines for different goals (speed, stroke, etc).
If you want to join us, please visit our team at http://teams.sparkpeople.com/SwimmingChall enge , we welcome everyone to our team and are always willing to help you improve your swimming experience.