Here's a helpful website:
www.heelspurs.com. Yeah, heel pain is not calf pain, but this guy's theory is that what's often diagnosed as heel spurs is usually plantar fasciitis and that plantar fasciitis is caused by (and is often just another symptom of) tight calves. For me, nothing worked as well as massage. Marathoner and running guru Jeff Galloway (
www.jeffgalloway.com) says the worst thing one can do to muscles that are already tight is stretch them more because it just stresses them more with the problem they already have. Massage works on the knots that makes them tight and draws blood to the area, which helps with healing. See if you can find a sports masseuse who specializes in cyclists, runners and triathloners. Good luck!