Dear : Sign up now for the SmartyPants Vitamins U.S. Masters Swimming Summer Fitness Challenge, a 2K swim between July 15-31. If you want to go farther, check out the  USMS 5K/10K ePostal National Championships.

If you or someone you know would make for an interesting story, please submit the idea to our article idea collector. We're interested in subjects for in-depth profiles, questions about training and technique, science-related topics, and lighthearted essays for Hot Tub.

Writers, feel free to make your pitches there, too.